⚠️️️ **CKEditor 4 (the open source edition) is no longer maintained.** ⚠️ If you would like to keep access to future CKEditor 4 security patches, check the [Extended Support Model](https://ckeditor.com/ckeditor-4-support/), which guarantees **security updates and critical bug fixes until December 2026**. Alternatively, [upgrade to CKEditor 5](https://ckeditor.com/docs/ckeditor5/latest/updating/ckeditor4/migration-from-ckeditor-4.html). ## CKEditor 4.23.0-lts This release introduces the LTS (”Long Term Support”) version of the editor, available under commercial terms (["Extended Support Model"](https://ckeditor.com/ckeditor-4-support/)). If you acquired the Extended Support Model for CKEditor 4 LTS, please read [the CKEditor 4 LTS key activation guide.](https://ckeditor.com/docs/ckeditor4/latest/support/licensing/license-key-and-activation.html) ## CKEditor 4.22.0 / 4.22.1 ⚠️ This is the last open source release of CKEditor 4. As announced in 2018, CKEditor 4 has reached its End of Life in June 2023. New Features: * [#5316](https://github.com/ckeditor/ckeditor4/issues/5316): Added vertical margins support for list elements in the [Paste from Word](https://ckeditor.com/cke4/addon/pastefromword) plugin. * [#5410](https://github.com/ckeditor/ckeditor4/issues/5410): Added the ability to indicate the language of styles in the [Styles Combo](https://ckeditor.com/cke4/addon/stylescombo) plugin via the [`config.styleSet`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_config.html#cfg-stylesSet) configuration option. * [#5510](https://github.com/ckeditor/ckeditor4/issues/5510): Added notification system to the editor informing users that the editor version is up-to-date and secure. See [`config.versionCheck`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_config.html#cfg-versionCheck) configuration option to learn more. Fixed Issues: * [#5437](https://github.com/ckeditor/ckeditor4/issues/5437): Fixed: Incorrect indication of selected items in combo boxes. The selected item was unmarked upon each opening of the combo box. * [#5495](https://github.com/ckeditor/ckeditor4/issues/5495): Fixed: Insufficient color ratio for links inside [Notifications](https://ckeditor.com/cke4/addon/notification). Other Changes: * [#5412](https://github.com/ckeditor/ckeditor4/issues/5412): Prevent using `document.domain` in Firefox in the [Preview](https://ckeditor.com/cke4/addon/preview) plugin. Note: CKEditor 4.22.1 has been released immediately after 4.22.0 to fix the README issues on [npm](https://www.npmjs.com/) and contains no changes vs 4.22.0. ## CKEditor 4.21.0 **Security Updates:** A cross-site scripting vulnerability has been discovered affecting [Iframe Dialog](https://ckeditor.com/cke4/addon/iframe) and [Media Embed](https://ckeditor.com/cke4/addon/embed) plugins. This vulnerability might affect a small percentage of integrators that depend on dynamic editor initialization/destroy mechanism. See [GitHub advisory](https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-vh5c-xwqv-cv9g) for more details. **Potential breaking changes** In some rare cases, a security release may introduce a breaking change to your application. We have provided configuration options that will help you mitigate any potential issues with the upgrade: - Starting from version 4.21, the [Iframe Dialog](https://ckeditor.com/cke4/addon/iframe) plugin applies the `sandbox` attribute by default, which restricts JavaScript code execution in the iframe element. To change this behavior, configure the [`config.iframe_attributes`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_config.html#cfg-iframe_attributes) option. - Starting from version 4.21, the [Media Embed](https://ckeditor.com/cke4/addon/embed) plugin regenerates the entire content of the embed widget by default. To change this behavior, configure the [`config.embed_keepOriginalContent`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_config.html#cfg-embed_keepOriginalContent) option. If you choose to change either of the above options, make sure to properly configure [Content Security Policy](https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP) to avoid any potential security issues that may arise from embedding iframe elements on your web page. You can read more details in the relevant security advisory and [contact us](security@cksource.com) if you have more questions. **An upgrade is highly recommended!** New Features: * [#4400](https://github.com/ckeditor/ckeditor4/issues/4400): Added the [`config.uploadImage_supportedTypes`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_config.html#cfg-uploadImage_supportedTypes) configuration option allowing to change the image formats accepted by the [Upload Image](https://ckeditor.com/cke4/addon/uploadimage) plugin. Thanks to [SilverYoCha](https://github.com/SilverYoCha)! Fixed Issues: * [#5431](https://github.com/ckeditor/ckeditor4/issues/5431): Fixed: No notification is shown when pasting or dropping unsupported image types into the editor. ## CKEditor 4.20.2 Fixed Issues: * [#439](https://github.com/ckeditor/ckeditor4/issues/439): Fixed: Incorrect Tab and Shift+Tab navigation for radio buttons inside the dialog. * [#4829](https://github.com/ckeditor/ckeditor4/issues/4829): Fixed: Undo reversed entire table content instead of a single cell. Thanks to that fix, multiple changes in a table can be undone one by one. * [#5396](https://github.com/ckeditor/ckeditor4/issues/5396): Fixed: Event listeners for `popstate` and `hashchange` events on the `window`, added by the [Maximize](https://ckeditor.com/cke4/addon/maximize) plugin, were not removed when destroying the editor instance. * [#5414](https://github.com/ckeditor/ckeditor4/issues/5414): Fixed: File and image uploaders based on the [Upload Widget plugin](https://ckeditor.com/cke4/addon/uploadwidget) and [Easy Image plugin ](https://ckeditor.com/cke4/addon/easyimage) didn't fire the [`change` event](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_editor.html#event-change) upon finishing upload, resulting in passing incorrect data in form controls for integration frameworks, like [Reactive forms in Angular](https://angular.io/guide/reactive-forms). * [#698](https://github.com/ckeditor/ckeditor4/issues/698): Fixed: An error was thrown after applying formatting to the widget with inline editable and switching to the source mode. Thanks to [Glen](https://github.com/glen-84)! API changes: * [#3540](https://github.com/ckeditor/ckeditor4/issues/3540): The [startup data](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_plugins_widget.html) passed to the widget's command is now used to also populate the widget's template. * [#5352](https://github.com/ckeditor/ckeditor4/issues/5352): Added the [`colorButton_contentsCss`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_config.html#cfg-colorButton_contentsCss) configuration option allowing to add custom CSS to the [Color Button](https://ckeditor.com/cke4/addon/colorbutton) menu content. Thanks to [mihilion](https://github.com/mihilion)! ## CKEditor 4.20.1 Fixed Issues: * [#5333](https://github.com/ckeditor/ckeditor4/issues/5333): Fixed: The original name of the uploaded image is not preserved by the [Upload Image](https://ckeditor.com/cke4/addon/uploadimage) plugin if the [Clipboard](https://ckeditor.com/cke4/addon/clipboard) plugin has enabled image handling. * [#2881](https://github.com/ckeditor/ckeditor4/issues/2881): Fixed: Changing table headers from "Both" to "First column" in the [Table](https://ckeditor.com/cke4/addon/table) dialog does not change the first column cell correctly. * [#2996](https://github.com/ckeditor/ckeditor4/issues/2996): Fixed: Table header "scope" attribute is incorrect for the "Headers: both" option in the [Table](https://ckeditor.com/cke4/addon/table) dialog. * [#4802](https://github.com/ckeditor/ckeditor4/issues/4802): Fixed: [Tableselection](https://ckeditor.com/cke4/addon/tableselection) caret moves to the previous cell after tabbing into the next cell and then removing its content. * [#5365](https://github.com/ckeditor/ckeditor4/issues/5365): Fixed: The value of the [`config.baseFloatZIndex`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_config.html#cfg-baseFloatZIndex) config variable is incorrectly applied to parent dialog when the child dialog is closed resulting in the dialog overlay covering up the dialog. Thanks to [JenoDK](https://github.com/JenoDK)! * [#5305](https://github.com/ckeditor/ckeditor4/issues/5305): Fixed: Anchor name can invalidly include spaces. ## CKEditor 4.20 New Features: * [#5084](https://github.com/ckeditor/ckeditor4/issues/5084): Added the [`config.tabletools_scopedHeaders`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_config.html#cfg-tabletools_scopedHeaders) configuration option controlling the behaviour of table headers with and without the `[scope]` attribute. * [#5219](https://github.com/ckeditor/ckeditor4/issues/5219): Added the [`config.image2_defaultLockRatio`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_config.html#cfg-image2_defaultLockRatio) configuration option allowing to set the default value of the "Lock ratio" option in the [Enhanced Image](https://ckeditor.com/cke4/addon/image2) dialog. * [#2008](https://github.com/ckeditor/ckeditor-dev/pull/2008): Extended the [Mentions](https://ckeditor.com/cke4/addon/mentions) and [Emoji](https://ckeditor.com/cke4/addon/emoji) plugins with a feature option that adds a space after an accepted autocompletion match. See: * [`configDefinition.followingSpace`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_plugins_mentions_configDefinition.html#property-followingSpace) option for the mentions plugin, and * [`config.emoji_followingSpace`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_config.html#cfg-emoji_followingSpace) option for the emoji plugin. * [#5215](https://github.com/ckeditor/ckeditor4/issues/5215): Added the [`config.coreStyles_toggleSubSup`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_config.html#cfg-coreStyles_toggleSubSup) configuration option which disallows setting the subscript and superscript on the same element simultaneously using UI buttons. This option is turned off by default. Fixed Issues: * [#4889](https://github.com/ckeditor/ckeditor4/issues/4889): Fixed: Incorrect position of the [Table Resize](https://ckeditor.com/cke4/addon/tableresize) cursor after scrolling the editor horizontally. * [#5319](https://github.com/ckeditor/ckeditor4/issues/5319): Fixed: [Autolink](https://ckeditor.com/cke4/addon/autolink) [`config.autolink_urlRegex`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_config.html#cfg-autolink_urlRegex) option produced invalid links when configured directly using the editor instance config. Thanks to [Aigars Zeiza](https://github.com/Zuzon)! * [#4941](https://github.com/ckeditor/ckeditor4/issues/4941): Fixed: Some entities got wrongly encoded when using [`entities_processNumerical = true`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_config.html#cfg-entities_processNumerical) configuration option. * [#4931](https://github.com/ckeditor/ckeditor4/issues/4931): Fixed: Selecting the whole editor content when there is only a list with an empty element at the end inside and deleting it did not delete all list items. API changes: * [#5122](https://github.com/ckeditor/ckeditor4/issues/5122): Added the ability to provide a list of buttons as an array to the [`config.removeButtons`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_config.html#cfg-removeButtons) config variable. * [#2008](https://github.com/ckeditor/ckeditor-dev/pull/2008): Added [Autocomplete](https://ckeditor.com/cke4/addon/autocomplete) [`followingSpace`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_plugins_autocomplete_configDefinition.html#property-followingSpace) option that finishes an accepted match with a space. ## CKEditor 4.19.1 Fixed Issues: * [#5125](https://github.com/ckeditor/ckeditor4/issues/5125): Fixed: Deleting a widget with disabled [autoParagraph](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_config.html#cfg-autoParagraph) by the keyboard `backspace` key removes the editor editable area and crashes the editor. * [#5135](https://github.com/ckeditor/ckeditor4/issues/5135): Fixed: The [`checkbox.setValue`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_ui_dialog_checkbox.html#method-setValue) and [`radio.setValue`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_ui_dialog_radio.html#method-setValue) methods are not chainable as stated in the documentation. Thanks to [Jordan Bradford](https://github.com/LordPachelbel)! * [#5085](https://github.com/ckeditor/ckeditor4/issues/5085): Fixed: The [Language](https://ckeditor.com/cke4/addon/language) plugin removes the element marking the text in foreign language if said element does not have an information about the text direction. * [#4284](https://github.com/ckeditor/ckeditor4/issues/4284): Fixed: [Tableselection](https://ckeditor.com/cke4/addon/tableselection) Merging cells with a rowspan throws an unexpected error and does not create an undo step. * [#5184](https://github.com/ckeditor/ckeditor4/issues/5184): Fixed: The [Editor Placeholder](https://ckeditor.com/cke4/addon/wysiwygarea) plugin degrades typing performance. * [#5158](https://github.com/ckeditor/ckeditor4/issues/5158): Fixed: [`CKEDITOR.tools#convertToPx()`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_tools.html#method-convertToPx) gives invalid results if the helper calculator element was deleted from the DOM. * [#5234](https://github.com/ckeditor/ckeditor4/issues/5234): Fixed: [Easy Image](https://ckeditor.com/cke4/addon/easyimage) doesn't allow to upload images files using toolbar button. * [#438](https://github.com/ckeditor/ckeditor4/issues/438): Fixed: It is impossible to navigate to the [elementspath](https://ckeditor.com/cke4/addon/elementspath) from the [toolbar](https://ckeditor.com/cke4/addon/toolbar) by keyboard and vice versa. * [#4449](https://github.com/ckeditor/ckeditor4/issues/4449): Fixed: [`dialog.validate#functions`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_dialog_validate.html#method-functions) incorrectly composes functions that return an optional error message, like e.g. [`dialog.validate.number`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_dialog_validate.html#method-number) due to unnecessary return type coercion. * [#4473](https://github.com/ckeditor/ckeditor4/issues/4473): Fixed: The [dialog.validate](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_dialog_validate.html) method does not accept parameter value. The issue originated in [dialog.validate.functions](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_dialog_validate.html#method-functions) method that did not properly propagate parameter value to validator. Affected validators: * [`functions`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_dialog_validate.html#method-functions) * [`equals`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_dialog_validate.html#method-equals) * [`notEqual`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_dialog_validate.html#method-notEqual) * [`cssLength`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_dialog_validate.html#method-cssLength) * [`htmlLength`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_dialog_validate.html#method-htmlLength) * [`inlineStyle`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_dialog_validate.html#method-inlineStyle) * [#5147](https://github.com/ckeditor/ckeditor4/issues/5147): Fixed: The [Accessibility Help](https://ckeditor.com/cke4/addon/a11yhelp) dialog does not contain info about focus being moved back to the editing area upon leaving dialogs. * [#5144](https://github.com/ckeditor/ckeditor4/issues/5144): Fixed: [Menu buttons](https://ckeditor.com/cke4/addon/menubutton) and [panel buttons](https://ckeditor.com/cke4/addon/panelbutton) incorrectly indicate the open status of their associated pop-up menus in the browser's accessibility tree. * [#5022](https://github.com/ckeditor/ckeditor4/issues/5022): Fixed: [Find and Replace](https://ckeditor.com/cke4/addon/find) does not respond to the `Enter` key. API changes: * [#5184](https://github.com/ckeditor/ckeditor4/issues/5184): Added the [`config.editorplaceholder_delay`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_config.html#cfg-editorplaceholder_delay) configuration option allowing to delay placeholder before it is toggled when changing editor content. * [#5184](https://github.com/ckeditor/ckeditor4/issues/5184): Added the [`CKEDITOR.tools#debounce()`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_tools.html#method-debounce) function allowing to postpone a passed function execution until the given milliseconds have elapsed since the last time it was invoked. ## CKEditor 4.19.0 New features: * [#2444](https://github.com/ckeditor/ckeditor4/issues/2444): Togglable toolbar buttons are now exposed as toggle buttons in the browser's accessibility tree. * [#4641](https://github.com/ckeditor/ckeditor4/issues/4641): Added an option allowing to cancel the [Delayed Editor Creation](https://ckeditor.com/docs/ckeditor4/latest/features/delayed_creation.html) feature as a function handle for editor creators ([`CKEDITOR.replace`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR.html#method-replace), [`CKEDITOR.inline`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR.html#method-inline), [`CKEDITOR.appendTo`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR.html#method-appendTo)). * [#4986](https://github.com/ckeditor/ckeditor4/issues/4986): Added [`config.shiftLineBreaks`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_config.html#cfg-shiftLineBreaks) allowing to preserve inline elements formatting when the `shift`+`enter` keystroke is used. * [#2445](https://github.com/ckeditor/ckeditor4/issues/2445): Added [`config.applicationTitle`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_config.html#cfg-applicationTitle) configuration option allowing to customize or disable the editor's application region label. This option, combined with [`config.title`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_config.html#cfg-title), gives much better control over the editor's labels read by screen readers. Fixed Issues: * [#4543](https://github.com/ckeditor/ckeditor4/issues/4543): Fixed: Toolbar buttons toggle state is not correctly announced by screen readers lacking the information whether the feature is on or off. * [#4052](https://github.com/ckeditor/ckeditor4/issues/4052): Fixed: Editor labels are read incorrectly by screen readers due to invalid editor control type for the [Iframe Editing Area](https://ckeditor.com/cke4/addon/wysiwygarea) editors. * [#1904](https://github.com/ckeditor/ckeditor4/issues/1904): Fixed: Screen readers are not announcing the read-only editor state. * [#4904](https://github.com/ckeditor/ckeditor4/issues/4904): Fixed: Table cell selection and navigation with the `tab` key behavior is inconsistent after adding a new row. * [#3394](https://github.com/ckeditor/ckeditor4/issues/3394): Fixed: [Enhanced image](https://ckeditor.com/cke4/addon/image2) plugin dialog is not supporting URL with query string parameters. Thanks to [Simon Urli](https://github.com/surli)! * [#5049](https://github.com/ckeditor/ckeditor4/issues/5049): Fixed: The editor fails in strict mode due to not following the `use strict` directives in a core editor module. * [#5095](https://github.com/ckeditor/ckeditor4/issues/5095): Fixed: The [clipboard](https://ckeditor.com/cke4/addon/clipboard) plugin shows notification about unsupported file format when the file type is different than `jpg`, `gif`, `png`, not respecting [supported types](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_fileTools_uploadWidgetDefinition.html#property-supportedTypes) by the [Upload Widget](https://ckeditor.com/cke4/addon/uploadwidget) plugin. * [#4855](https://github.com/ckeditor/ckeditor4/issues/4855): [iOS] Fixed: Focusing toolbar buttons with an enabled VoiceOver screen reader moves the browser focus into an editable area and interrupts button functionality. API changes: * [#4641](https://github.com/ckeditor/ckeditor4/issues/4641): The [`CKEDITOR.replace`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR.html#method-replace), [`CKEDITOR.inline`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR.html#method-inline), [`CKEDITOR.appendTo`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR.html#method-appendTo) functions are now returning a handle function allowing to cancel the [Delayed Editor Creation](https://ckeditor.com/docs/ckeditor4/latest/features/delayed_creation.html) feature. * [#5095](https://github.com/ckeditor/ckeditor4/issues/5095): Added the [CKEDITOR.plugins.clipboard.addFileMatcher](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_plugins_clipboard.html#method-addFileMatcher) function allowing to define file formats supported by the [clipboard](https://ckeditor.com/cke4/addon/clipboard) plugin. Trying to paste unsupported files will result in a notification that a file cannot be dropped or pasted into the editor. * [#2445](https://github.com/ckeditor/ckeditor4/issues/2445): Added [`config.applicationTitle`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_config.html#cfg-applicationTitle) alongside [`CKEDITOR.editor#applicationTitle`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_editor.html#property-applicationTitle) to allow customizing editor's application region label. ## CKEditor 4.18.0 **Security Updates:** * Fixed an XSS vulnerability in the core module reported by GitHub Security Lab team member [Kevin Backhouse](https://github.com/kevinbackhouse). Issue summary: The vulnerability allowed to inject malformed HTML bypassing content sanitization, which could result in executing a JavaScript code. See [CVE-2022-24728](https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-4fc4-4p5g-6w89) for more details. * Fixed a Regular expression Denial of Service (ReDoS) vulnerability in dialog plugin discovered by the CKEditor 4 team during our regular security audit. Issue summary: The vulnerability allowed to abuse a dialog input validator regular expression, which could cause a significant performance drop resulting in a browser tab freeze. See [CVE-2022-24729](https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-f6rf-9m92-x2hh) for more details. You can read more details in the relevant security advisory and [contact us](security@cksource.com) if you have more questions. **An upgrade is highly recommended!** **Highlights:** [Web Spell Checker](https://webspellchecker.com/) ended support for WebSpellChecker Dialog on December 31st, 2021. This means the plugin is not supported any longer. Therefore, we decided to deprecate and remove the WebSpellChecker Dialog plugin from CKEditor 4 presets. We strongly encourage everyone to choose one of the other available spellchecking solutions - [Spell Check As You Type (SCAYT)](https://ckeditor.com/cke4/addon/scayt) or [WProofreader](https://ckeditor.com/cke4/addon/wproofreader). Fixed issues: * [#5097](https://github.com/ckeditor/ckeditor4/issues/5097): [Chrome] Fixed: Incorrect conversion of points to pixels while using [`CKEDITOR.tools.convertToPx()`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_tools.html#method-convertToPx). * [#5044](https://github.com/ckeditor/ckeditor4/issues/5044): Fixed: `select` elements with `multiple` attribute had incorrect styling. Thanks to [John R. D'Orazio](https://github.com/JohnRDOrazio)! Other changes: * [#5093](https://github.com/ckeditor/ckeditor4/issues/5093): Deprecated and removed WebSpellChecker Dialog from presets. * [#5127](https://github.com/ckeditor/ckeditor4/issues/5127): Deprecated the [`CKEDITOR.rnd`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR.html#property-rnd) property to discourage using it in a security-sensitive context. * [#5087](https://github.com/ckeditor/ckeditor4/issues/5087): Improved the jQuery adapter by replacing a deprecated jQuery API with existing counterparts. Thanks to [Fran Boon](https://github.com/flavour)! * [#5128](https://github.com/ckeditor/ckeditor4/issues/5128): Improved the [Emoji](https://ckeditor.com/cke4/addon/emoji) definitions encoding set by the [`config.emoji_emojiListUrl`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_config.html#cfg-emoji_emojiListUrl) configuration option. ## CKEditor 4.17.2 Fixed issues: * [#4934](https://github.com/ckeditor/ckeditor4/issues/4934): Fixed: Active focus in dialog tabs is not visible in the High Contrast mode. * [#547](https://github.com/ckeditor/ckeditor4/issues/547): Fixed: Dragging and dropping elements like images within a table is no longer available. * [#4875](https://github.com/ckeditor/ckeditor4/issues/4875): Fixed: It is not possible to delete multiple selected lists. * [#4873](https://github.com/ckeditor/ckeditor4/issues/4873): Fixed: Pasting content from MS Word and Outlook with horizontal lines prevents images from being uploaded. * [#4952](https://github.com/ckeditor/ckeditor4/issues/4952): Fixed: Dragging and dropping images within a table cell appends additional elements. * [#4761](https://github.com/ckeditor/ckeditor4/issues/4761): Fixed: Some CSS files are missing unique timestamp used to prevent browser to cache static resources between editor releases. * [#4987](https://github.com/ckeditor/ckeditor4/issues/4987): Fixed: [Find/Replace](https://ckeditor.com/cke4/addon/find) is not recognizing more than one space character. * [#5061](https://github.com/ckeditor/ckeditor4/issues/5061): Fixed: [Find/Replace](https://ckeditor.com/cke4/addon/find) plugin incorrectly handles multiple whitespace during replacing text. * [#5004](https://github.com/ckeditor/ckeditor4/issues/5004): Fixed: `MutationObserver` used in [IFrame Editing Area](https://ckeditor.com/cke4/addon/wysiwygarea) plugin causes memory leaks. * [#4994](https://github.com/ckeditor/ckeditor4/issues/4994): Fixed: [Easy Image](https://ckeditor.com/cke4/addon/easyimage) plugin caused content pasted from Word to turn into an image. API changes: * [#4918](https://github.com/ckeditor/ckeditor4/issues/4918): Explicitly set the [`config.useComputedState`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_config.html#cfg-useComputedState) default value to `true`. Thanks to [Shabab Karim](https://github.com/shabab477)! * [#4761](https://github.com/ckeditor/ckeditor4/issues/4761): The [`CKEDITOR.appendTimestamp()`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR.html#method-appendTimestamp) function was added. * [#4761](https://github.com/ckeditor/ckeditor4/issues/4761): [`CKEDITOR.dom.document#appendStyleSheet()`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_dom_document.html#method-appendStyleSheet) and [`CKEDITOR.tools.buildStyleHtml()`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_tools.html#method-buildStyleHtml) now use the newly added [`CKEDITOR.appendTimestamp()`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR.html#method-appendTimestamp) function to correctly handle caching of CSS files. Other changes: * [#5014](https://github.com/ckeditor/ckeditor4/issues/5014): Fixed: Toolbar configurator fails when plugin does not define a toolbar group. Thanks to [SuperPat](https://github.com/SuperPat45)! ## CKEditor 4.17.1 **Highlights:** Due to a regression in CKEeditor 4.17.0 version that was only revealed after the release and affected a limited area of operation, CSS assets loaded via relative links started to point into invalid location when loaded from external resources. We have therefore decided to immediately release CKEditor 4.17.1 that fixed this problem. If you have already upgraded to v4.17.0, make sure to upgrade to v4.17.1 to avoid this regression. Fixed issues: * [#4979](https://github.com/ckeditor/ckeditor4/issues/3757): Fixed: Added cache key in [#4761](https://github.com/ckeditor/ckeditor4/issues/4761) started to breaking relative links for external CSS resources. The fix has been reverted and will be corrected in the next editor version. ## CKEditor 4.17 **Security Updates:** * Fixed XSS vulnerability in the core module reported by [William Bowling](https://github.com/wbowling). Issue summary: The vulnerability allowed to inject malformed comments HTML bypassing content sanitization, which could result in executing JavaScript code. See [CVE-2021-41165](https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-7h26-63m7-qhf2) for more details. * Fixed XSS vulnerability in the core module reported by [Maurice Dauer](https://twitter.com/laytonctf). Issue summary: The vulnerability allowed to inject malformed HTML bypassing content sanitization, which could result in executing JavaScript code. See [CVE-2021-41164](https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-pvmx-g8h5-cprj) for more details. You can read more details in the relevant security advisory and [contact us](security@cksource.com) if you have more questions. **An upgrade is highly recommended!** **Highlights:** Adobe [ended support of Flash Player](https://www.adobe.com/products/flashplayer/end-of-life.html) on December 31, 2020 and blocked Flash content from running in Flash Player beginning January 12, 2021. We have decided to deprecate and remove the [Flash](https://ckeditor.com/cke4/addon/flash) plugin from CKEditor 4 to help protect users' systems and discourage using insecure software. New Features: * [#3433](https://github.com/ckeditor/ckeditor4/issues/3433): Marked required fields in dialogs with asterisk (`*`) symbol. * [#4374](https://github.com/ckeditor/ckeditor4/issues/4374): Integrated the [Maximize](https://ckeditor.com/cke4/addon/maximize) plugin with browser's History API. * [#4461](https://github.com/ckeditor/ckeditor4/issues/4461): Introduced the possibility to delay editor initialization while it is in a detached DOM element. * [#4462](https://github.com/ckeditor/ckeditor4/issues/4462): Introduced support for reattaching editor container element to DOM. * [#4612](https://github.com/ckeditor/ckeditor4/issues/4612): Allow pasting images as Base64 from [clipboard](https://ckeditor.com/cke4/addon/clipboard) in all browsers except IE. * [#4681](https://github.com/ckeditor/ckeditor4/issues/4681): Allow drag and drop images as Base64. * [#4750](https://github.com/ckeditor/ckeditor4/issues/4750): Added notification for pasting and dropping unsupported file types into the editor. * [#4807](https://github.com/ckeditor/ckeditor4/issues/4807): [Chrome] Improved the performance of pasting large images. Thanks to [FlowIT-JIT](https://github.com/FlowIT-JIT)! * [#4850](https://github.com/ckeditor/ckeditor4/issues/4850): Added support for loading [content templates](https://ckeditor.com/cke4/addon/templates) from HTML files. Thanks to [Fynn96](https://github.com/Fynn96)! * [#4874](https://github.com/ckeditor/ckeditor4/issues/4874): Added the [`config.clipboard_handleImages`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_config.html#cfg-clipboard_handleImages) configuration option for enabling and disabling built-in support for pasting and dropping images in the [Clipboard](https://ckeditor.com/cke4/addon/clipboard) plugin. Thanks to [FlowIT-JIT](https://github.com/FlowIT-JIT)! * [#4026](https://github.com/ckeditor/ckeditor4/issues/4026): [Preview](https://ckeditor.com/cke4/addon/preview) plugin now uses the [`editor#title`](http://localhost/ckeditor4-docs/build/docs/ckeditor4/latest/api/CKEDITOR_editor.html#property-title) property for the title of the preview window. Thanks to [Ely](https://github.com/Elyasin)! * [#4467](https://github.com/ckeditor/ckeditor4/issues/4467): Added support for inserting content next to a block [widgets](https://ckeditor.com/cke4/addon/widget) using keyboard navigation. Thanks to [bunglegrind](https://github.com/bunglegrind)! Fixed Issues: * [#3757](https://github.com/ckeditor/ckeditor4/issues/3757): [Firefox] Fixed: images pasted from [clipboard](https://ckeditor.com/cke4/addon/clipboard) are not inserted as Base64-encoded images. * [#3876](https://github.com/ckeditor/ckeditor4/issues/3876): Fixed: The [Print](https://ckeditor.com/cke4/addon/print) plugin incorrectly prints links and images. * [#4444](https://github.com/ckeditor/ckeditor4/issues/4444): [Firefox] Fixed: Print preview is incorrectly loaded from CDN. * [#4596](https://github.com/ckeditor/ckeditor4/issues/4596): Fixed: Incorrect handling of HSL/HSLA values in [`CKEDITOR.tools.color`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_tools_color.html). * [#4597](https://github.com/ckeditor/ckeditor4/issues/4597): Fixed: Incorrect color conversion for HSL/HSLA values in [`CKEDITOR.tools.color`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_tools_color.html). * [#4604](https://github.com/ckeditor/ckeditor4/issues/4604): Fixed: [`CKEDITOR.plugins.clipboard.dataTransfer#getTypes()`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_plugins_clipboard_dataTransfer.html#method-getTypes) returns no types. * [#4761](https://github.com/ckeditor/ckeditor4/issues/4761): Fixed: Not all resources loaded by the editor respect the cache key. * [#4783](https://github.com/ckeditor/ckeditor4/issues/4783): Fixed: The [Accessibility Help](https://ckeditor.com/cke4/addon/a11yhelp) dialog does not contain info about focus being moved back to the editing area upon activating a toolbar button. * [#4790](https://github.com/ckeditor/ckeditor4/issues/4790): Fixed: Printing page is invoked before the printed page is fully loaded. * [#4874](https://github.com/ckeditor/ckeditor4/issues/4874): Fixed: Built-in support for pasting and dropping images in the [Clipboard](https://ckeditor.com/cke4/addon/clipboard) plugin restricts third party plugins from handling image pasting. Thanks to [FlowIT-JIT](https://github.com/FlowIT-JIT)! * [#4888](https://github.com/ckeditor/ckeditor4/issues/4888): Fixed: The [`CKEDITOR.dialog#setState()`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_dialog.html#method-setState) method throws error when there is no "OK" button in the dialog. * [#4858](https://github.com/ckeditor/ckeditor4/issues/4858): Fixed: The [Autolink](https://ckeditor.com/cke4/addon/autolink) plugin incorrectly escapes the `&` characters when pasting links into the editor. * [#4892](https://github.com/ckeditor/ckeditor4/issues/4892): Fixed: Focus of buttons in dialogs is not visible enough in High Contrast mode. * [#3858](https://github.com/ckeditor/ckeditor4/issues/3858): Fixed: Pasting content in `ENTER_BR` [enter mode](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_config.html#cfg-enterMode) crashes the editor. * [#4891](https://github.com/ckeditor/ckeditor4/issues/4891): Fixed: The [Autogrow](https://ckeditor.com/cke4/addon/autogrow) plugin applies fixed width to the editor. API Changes: * [#4462](https://github.com/ckeditor/ckeditor4/issues/4462): [`CKEDITOR.editor#getSelection()`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_editor.html#method-getSelection) now returns `null` if the editor is in recreating state. * [#4583](https://github.com/ckeditor/ckeditor4/issues/4583): Added support for new, comma-less color syntax to [`CKEDITOR.tools.color`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_tools_color.html). * [#4604](https://github.com/ckeditor/ckeditor4/issues/4604): Added the [`CKEDITOR.plugins.clipboard.dataTransfer#isFileTransfer()`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_plugins_clipboard_dataTransfer.html#method-isFileTransfer) method. * [#4790](https://github.com/ckeditor/ckeditor4/issues/4790): Added `callback` parameter to [`CKEDITOR.plugins.preview#createPreview()`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_plugins_preview.html#method-createPreview) method. Other Changes: * [#4866](https://github.com/ckeditor/ckeditor4/issues/#4866): The [Flash](https://ckeditor.com/cke4/addon/flash) plugin is now deprecated and has been removed from CKEditor 4. * [#4901](https://github.com/ckeditor/ckeditor4/issues/4901): Redesigned buttons placement in the [Content templates](https://ckeditor.com/cke4/addon/templates) dialog to make it more UX friendly. Thanks to [Fynn96](https://github.com/Fynn96)! ## CKEditor 4.16.2 **Security Updates:** * Fixed XSS vulnerability in the [Clipboard](https://ckeditor.com/cke4/addon/clipboard) plugin reported by [Anton Subbotin](https://github.com/skavans). Issue summary: The vulnerability allowed to abuse paste functionality using malformed HTML, which could result in injecting arbitrary HTML into the editor. See [CVE-2021-32809](https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-7889-rm5j-hpgg) for more details. * Fixed XSS vulnerability in the [Widget](https://ckeditor.com/cke4/addon/widget) plugin reported by [Anton Subbotin](https://github.com/skavans). Issue summary: The vulnerability allowed to abuse undo functionality using malformed [Widget](https://ckeditor.com/cke4/addon/widget) HTML, which could result in executing JavaScript code. See [CVE-2021-32808](https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-6226-h7ff-ch6c) for more details. * Fixed XSS vulnerability in the [Fake Objects](https://ckeditor.com/cke4/addon/fakeobjects) plugin reported by [Mika Kulmala](https://github.com/kulmik). Issue summary: The vulnerability allowed to inject malformed [Fake Objects](https://ckeditor.com/cke4/addon/fakeobjects) HTML, which could result in executing JavaScript code. See [CVE-2021-37695](https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-m94c-37g6-cjhc) for more details. You can read more details in the relevant security advisory and [contact us](security@cksource.com) if you have more questions. **An upgrade is highly recommended!** Fixed Issues: * [#4777](https://github.com/ckeditor/ckeditor4/issues/4777): Fixed: HTML comments in widgets not processed correctly. * [#4733](https://github.com/ckeditor/ckeditor4/pull/4733): Fixed: [Link](https://ckeditor.com/cke4/addon/link) prevent duplicate anchors in text with styles. * [#4728](https://github.com/ckeditor/ckeditor4/issues/4728): Fixed: Multiple anchors in one line and multi-line with text style. * [#3863](https://github.com/ckeditor/ckeditor4/issues/3863): Fixed: Multiple anchors in single word with text style. * [#3819](https://github.com/ckeditor/ckeditor4/issues/3819): [Chrome] Fixed: After removing one of the two consecutive spaces, the ` ` character appears in the editor instead of a space. * [#4666](https://github.com/ckeditor/ckeditor4/pull/4666): [IE] Introduce CSS.escape polyfill. Thanks to [limingli0707](https://github.com/limingli0707)! * [#681](https://github.com/ckeditor/ckeditor4/issues/681): Fixed: Table elements (td, tr, th, ..) with an id that starts with dot (.) causes javascript runtime err. * [#641](https://github.com/ckeditor/ckeditor4/issues/641): Fixed: UploadImage Plugin Widgets not working in IE, Opera, Safari, PhantomJS. * [#3638](https://github.com/ckeditor/ckeditor4/issues/3638): Fixed: Opening the same dialog twice causes it to become hidden under the dialog's page cover. * [#4247](https://github.com/ckeditor/ckeditor4/issues/4247): Fixed: [Color Button](https://ckeditor.com/cke4/addon/colorbutton)'s incorrect rendering on the first opening. * [#4555](https://github.com/ckeditor/ckeditor4/issues/4555): Fixed: [Font](https://ckeditor.com/cke4/addon/font) styles with attributes are not applied correctly when used multiple times over the same selection. * [#4782](https://github.com/ckeditor/ckeditor4/issues/4782): [Firefox] Fixed: `TypeError` is thrown when switching to Source View and back while [Autocomplete](https://ckeditor.com/cke4/addon/autocomplete) plugin is enabled. ## CKEditor 4.16.1 Fixed Issues: * [#4617](https://github.com/ckeditor/ckeditor4/issues/4617): Fixed: [Autocomplete](https://ckeditor.com/cke4/addon/autocomplete) is not accessible in inline editors. * [#4493](https://github.com/ckeditor/ckeditor4/issues/4493): Fixed: The [drop-down](https://ckeditor.com/cke4/addon/richcombo) label does not reflect the current value of the drop-down. * [#1572](https://github.com/ckeditor/ckeditor4/issues/1572): Fixed: A paragraph before or after a [widget](https://ckeditor.com/cke4/addon/widget) cannot be removed. Thanks to [bunglegrind](https://github.com/bunglegrind)! * [#4301](https://github.com/ckeditor/ckeditor4/issues/4301): Fixed: Pasted content is overwritten when pasted in an initially empty editor with the [`div` Enter mode](https://ckeditor.com/docs/ckeditor4/latest/features/enterkey.html). * [#4351](https://github.com/ckeditor/ckeditor4/issues/4351): Fixed: Incorrect values for RGBA/HSLA colors in [Color Dialog](https://ckeditor.com/cke4/addon/colordialog). * [#4509](https://github.com/ckeditor/ckeditor4/issues/4509): Fixed: Incorrect handling of drag & drop inside [widgets](https://ckeditor.com/cke4/addon/widget) and nested editables. * [#4611](https://github.com/ckeditor/ckeditor4/issues/4611): [Android, iOS] Fixed: Incorrect hover styles for buttons in the toolbar on mobile devices. * [#4652](https://github.com/ckeditor/ckeditor4/issues/4652): Fixed: [Event data](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_eventInfo.html) set to `false` is treated as an event cancellation. * [#4659](https://github.com/ckeditor/ckeditor4/issues/4659): Fixed: [`CKEDITOR.htmlParser`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_htmlParser.html) does not treat `--!>` as a comment end tag correctly. ## CKEditor 4.16 **Security Updates:** * Fixed ReDoS vulnerability in the [Autolink](https://ckeditor.com/cke4/addon/autolink) plugin. Issue summary: It was possible to execute a ReDoS-type attack inside CKEditor 4 by persuading a victim to paste a specially crafted URL-like text into the editor and press Enter or Space. * Fixed ReDoS vulnerability in the [Advanced Tab for Dialogs](https://ckeditor.com/cke4/addon/dialogadvtab) plugin. Issue summary: It was possible to execute a ReDoS-type attack inside CKEditor 4 by persuading a victim to paste a specially crafted text into the Styles dialog. **An upgrade is highly recommended!** New Features: * [#2800](https://github.com/ckeditor/ckeditor4/issues/2800): Unsupported image formats are now gracefully handled by the [Paste from Word](https://ckeditor.com/cke4/addon/pastefromword) plugin on paste, additionally showing descriptive error messages. * [#2800](https://github.com/ckeditor/ckeditor4/issues/2800): Unsupported image formats are now gracefully handled by the [Paste from LibreOffice](https://ckeditor.com/cke4/addon/pastefromlibreoffice) plugin on paste, additionally showing descriptive error messages. * [#3582](https://github.com/ckeditor/ckeditor4/issues/3582): Introduced smart positioning of the [Autocomplete](https://ckeditor.com/cke4/addon/autocomplete) panel used by the [Mentions](https://ckeditor.com/cke4/addon/mentions) and [Emoji](https://ckeditor.com/cke4/addon/emoji) plugins. The panel will now be additionally positioned related to the browser viewport to be always fully visible. * [#4388](https://github.com/ckeditor/ckeditor4/issues/4388): Added the option to remove an iframe created with the [IFrame Dialog](https://ckeditor.com/cke4/addon/iframe) plugin from the sequential keyboard navigation using the `tabindex` attribute. Thanks to [Timo Kirkkala](https://github.com/kirkkala)! Fixed Issues: * [#1134](https://github.com/ckeditor/ckeditor4/issues/1134): [Safari] Fixed: [Paste from Word](https://ckeditor.com/cke4/addon/pastefromword) does not embed images. * [#2800](https://github.com/ckeditor/ckeditor4/issues/2800): Fixed: No images are imported from Microsoft Word when the content is pasted via the [Paste from Word](https://ckeditor.com/cke4/addon/pastefromword) plugin if there is at least one image of unsupported format. * [#4379](https://github.com/ckeditor/ckeditor4/issues/4379): [Edge] Fixed: Incorrect detection of the [high contrast mode](https://ckeditor.com/docs/ckeditor4/latest/guide/dev_a11y.html#high-contrast-mode). * [#4422](https://github.com/ckeditor/ckeditor4/issues/4422): Fixed: Missing space between the button name and the keyboard shortcut inside the button label in the [high contrast mode](https://ckeditor.com/docs/ckeditor4/latest/guide/dev_a11y.html#high-contrast-mode). * [#2208](https://github.com/ckeditor/ckeditor4/issues/2208): [IE] Fixed: The [Autolink](https://ckeditor.com/cke4/addon/autolink) plugin duplicates the native browser implementation. * [#1824](https://github.com/ckeditor/ckeditor4/issues/1824): Fixed: The [Autolink](https://ckeditor.com/cke4/addon/autolink) plugin should require the [Link](https://ckeditor.com/cke4/addon/link) plugin. * [#4253](https://github.com/ckeditor/ckeditor4/issues/4253): Fixed: The [Editor Placeholder](https://ckeditor.com/cke4/addon/editorplaceholder) plugin throws an error during the editor initialization with [`config.fullPage`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_config.html#cfg-fullPage) enabled when there is no `` tag in the editor content. * [#4372](https://github.com/ckeditor/ckeditor4/issues/4372): Fixed: The [Autogrow](https://ckeditor.com/cke4/addon/autogrow) plugin changes the editor's width when used with an absolute [`config.width`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_config.html#cfg-width) value. API Changes: * [#4358](https://github.com/ckeditor/ckeditor4/issues/4358): Introduced the [`CKEDITOR.tools.color`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_tools_color.html) class which adds colors validation and methods for converting colors between various formats: named colors, HEX, RGB, RGBA, HSL and HSLA. * [#3782](https://github.com/ckeditor/ckeditor4/issues/3782): Moved the [`CKEDITOR.plugins.pastetools.filters.word.images`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_plugins_pastetools_filters_word_images.html) filters to the [`CKEDITOR.plugins.pastetools.filters.image`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_plugins_pastetools_filters_image.html) namespace. * [#4297](https://github.com/ckeditor/ckeditor4/issues/4297): All [`CKEDITOR.plugins.pastetools.filters`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_plugins_pastetools_filters.html) are now available under the [`CKEDITOR.pasteTools`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR.html#property-pasteTools) alias. * [#4394](https://github.com/ckeditor/ckeditor4/issues/4394): Introduced [`CKEDITOR.ajax`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_ajax.html) specialized loading methods for loading binary ([`CKEDITOR.ajax.loadBinary()`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_ajax.html#method-loadBinary)) and text ([`CKEDITOR.ajax.loadText()`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_ajax.html#method-loadText)) data. Other Changes: * The [WebSpellChecker](https://ckeditor.com/cke4/addon/wsc) (WSC) plugin is now disabled by default in [Standard and Full presets](https://ckeditor.com/cke4/presets). It can be enabled via [`extraPlugins`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_config.html#cfg-extraPlugins) configuration option. ## CKEditor 4.15.1 **Security Updates:** * Fixed XSS vulnerability in the [Color History feature](https://ckeditor.com/docs/ckeditor4/latest/features/colorbutton.html#color-history) reported by [Mark Wade](https://github.com/mark-wade). Issue summary: It was possible to execute an XSS-type attack inside CKEditor 4 by persuading a victim to paste a specially crafted HTML code into the [Color Button](https://ckeditor.com/cke4/addon/colorbutton) dialog. **An upgrade is highly recommended!** Fixed Issues: * [#4293](https://github.com/ckeditor/ckeditor4/issues/4293): Fixed: The [`CKEDITOR.inlineAll()`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR.html#method-inlineAll) method tries to initialize inline editor also on elements with an editor already attached to them. * [#3961](https://github.com/ckeditor/ckeditor4/issues/3961): Fixed: The [Table Resize](https://ckeditor.com/cke4/addon/tableresize) plugin prevents editing of merged cells. * [#3649](https://github.com/ckeditor/ckeditor4/issues/3649): Fixed: Applying a [block format](https://ckeditor.com/docs/ckeditor4/latest/features/format.html) should remove existing block styles. * [#4282](https://github.com/ckeditor/ckeditor4/issues/4282): Fixed: The [script loader](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_scriptLoader.html) does not execute callback for scripts already loaded when called for the second time. Thanks to [Alexander Korotkevich](https://github.com/aldoom)! * [#4273](https://github.com/ckeditor/ckeditor4/issues/4273): Fixed: A memory leak in the [`CKEDITOR.domReady()`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR.html#method-domReady) method connected with not removing `load` event listeners. Thanks to [rohit1](https://github.com/rohit1)! * [#1330](https://github.com/ckeditor/ckeditor4/issues/1330): Fixed: Incomplete CSS margin parsing if an `auto` or `0` value is used. * [#4286](https://github.com/ckeditor/ckeditor4/issues/4286): Fixed: The [Auto Grow](https://ckeditor.com/cke4/addon/autogrow) plugin causes the editor width to be set to `0` on editor resize. * [#848](https://github.com/ckeditor/ckeditor4/issues/848): Fixed: Arabic text not being "bound" correctly when pasting. Thanks to [Thomas Hunkapiller](https://github.com/devoidfury) and [J. Ivan Duarte Rodríguez](https://github.com/jidrone-mbm)! API Changes: * [#3649](https://github.com/ckeditor/ckeditor4/issues/3649): Added a new [`stylesRemove`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_editor.html#event-stylesRemove) editor event. Other Changes: * [#4262](https://github.com/ckeditor/ckeditor4/issues/4262): Removed the global reference to the `stylesLoaded` variable. Thanks to [Levi Carter](https://github.com/swiftMessenger)! * Updated the [Export to PDF](https://ckeditor.com/cke4/addon/exportpdf) plugin to `1.0.1` version: * Improved external CSS support for [classic editor](https://ckeditor.com/docs/ckeditor4/latest/examples/classic.html) by handling exceptions and displaying convenient [error messages](https://ckeditor.com/docs/ckeditor4/latest/guide/dev_errors.html#exportpdf-stylesheets-incaccessible). ## CKEditor 4.15 New features: * [#3940](https://github.com/ckeditor/ckeditor4/issues/3940): Introduced the `colorName` property for customizing foreground and background styles in the [Color Button](https://ckeditor.com/cke4/addon/colorbutton) plugin via the [`config.colorButton_foreStyle`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_config.html#cfg-colorButton_foreStyle) and [`config.colorButton_backStyle`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_config.html#cfg-colorButton_backStyle) configuration options. * [#3793](https://github.com/ckeditor/ckeditor4/issues/3793): Introduced the [Editor Placeholder](https://ckeditor.com/cke4/addon/editorplaceholder) plugin. * [#1795](https://github.com/ckeditor/ckeditor4/issues/1795): The colors picked from the [Color Dialog](https://ckeditor.com/cke4/addon/colordialog) are now stored in the [Color Button](https://ckeditor.com/cke4/addon/colorbutton) palette and can be reused easily. * [#3783](https://github.com/ckeditor/ckeditor4/issues/3783): The colors used in the document are now displayed as a part of the [Color Button](https://ckeditor.com/cke4/addon/colorbutton) palette. Fixed Issues: * [#4060](https://github.com/ckeditor/ckeditor4/issues/4060): Fixed: The content inside a [widget](https://ckeditor.com/cke4/addon/widget) nested editable is escaped twice. * [#4183](https://github.com/ckeditor/ckeditor4/issues/4183): [Safari] Fixed: Incorrect image dimensions when using the [Easy Image](https://ckeditor.com/cke4/addon/easyimage) plugin alongside the [IFrame Editing Area](https://ckeditor.com/cke4/addon/wysiwygarea) plugin. * [#3693](https://github.com/ckeditor/ckeditor4/issues/3693): Fixed: Incorrect default values for several [Color Button](https://ckeditor.com/cke4/addon/colorbutton) configuration variables in the API documentation. * [#3795](https://github.com/ckeditor/ckeditor4/issues/3795): Fixed: Setting the [`config.dataIndentationChars`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_config.html#cfg-dataIndentationChars) configuration option to an empty string is ignored and replaced by a tab (`\t`) character. Thanks to [Thomas Grinderslev](https://github.com/Znegl)! * [#4107](https://github.com/ckeditor/ckeditor4/issues/4107): Fixed: Multiple [Autocomplete](https://ckeditor.com/cke4/addon/autocomplete) instances cause keyboard navigation issues. * [#4041](https://github.com/ckeditor/ckeditor4/issues/4041): Fixed: The[`selection.scrollIntoView`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_dom_selection.html#method-scrollIntoView) method throws an error when the editor selection is not set. * [#3361](https://github.com/ckeditor/ckeditor4/issues/3361): Fixed: Loading multiple [custom editor configurations](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_config.html#cfg-customConfig) is prone to a race condition between these. * [#4007](https://github.com/ckeditor/ckeditor4/issues/4007): Fixed: Screen readers do not announce the [Rich Combo](https://ckeditor.com/cke4/addon/richcombo) plugin is collapsed or expanded. * [#4141](https://github.com/ckeditor/ckeditor4/issues/4141): Fixed: The styles are incorrectly applied when there is a `` DOM element. Other Changes: * [#13859](https://dev.ckeditor.com/ticket/13859): Test cases created with `bender.tools.createTestsForEditors` will also receive editor bot as a second parameter. ## CKEditor 4.5.4 New Features: * [#13632](https://dev.ckeditor.com/ticket/13632): Introduce error logging mechanism. * [#13730](https://dev.ckeditor.com/ticket/13730): Switch to the new error logging mechanism. Fixed Issues: * [#9856](https://dev.ckeditor.com/ticket/9856): Fixed: Cannot use the native context menu together with the [Div Editing Area](https://ckeditor.com/cke4/addon/divarea) plugin. Thanks to [Mark Wade](https://github.com/mark-wade)! * [#12733](https://dev.ckeditor.com/ticket/12733): [IE9+] Fixed: Radio button `onChange` does not work. Thanks to [Iliya Kostadinov](https://github.com/iliyakostadinov)! * [#13142](https://dev.ckeditor.com/ticket/13142): [Edge] Fixed: *Ctrl+A* and then *Backspace* result in an empty `
` element. * [#13599](https://dev.ckeditor.com/ticket/13599): Fixed: Cross-editor drag and drop of an inline widget results in error/artifacts. * [#13640](https://dev.ckeditor.com/ticket/13640): [IE] Fixed: Dropping a widget outside the `` element is not handled correctly. * [#13533](https://dev.ckeditor.com/ticket/13533): Fixed: No progress during upload. * [#13680](https://dev.ckeditor.com/ticket/13680): Fixed: The parser should allow the `` element to be a child of the `` element. * [#11724](https://dev.ckeditor.com/ticket/11724): [Touch devices] Fixed: Drop-downs often hide right after opening them. * [#13690](https://dev.ckeditor.com/ticket/13690): Fixed: Copying content from IE to Chrome adds an extra paragraph. * [#13284](https://dev.ckeditor.com/ticket/13284): Fixed: Cannot drag and drop a widget if the text caret is placed just after the widget instance. * [#13516](https://dev.ckeditor.com/ticket/13516): Fixed: CKEditor removes empty HTML5 anchors without the `name` attribute. * [#13765](https://dev.ckeditor.com/ticket/13765): [Safari 9] Fixed: Problems with rendering samples. Other Changes: * [#11725](https://dev.ckeditor.com/ticket/11725): Marked [`CKEDITOR.env.mobile`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_env.html#property-mobile) as deprecated. The reason is that it is no longer clear what "mobile" means. * [#13737](https://dev.ckeditor.com/ticket/13737): Upgraded [Bender.js](https://github.com/benderjs/benderjs) to 0.4.1. ## CKEditor 4.5.3 New Features: * [#13501](https://dev.ckeditor.com/ticket/13501): Added the [`config.fileTools_defaultFileName`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_config.html#cfg-fileTools_defaultFileName) option to allow setting a default file name for paste uploads. * [#13603](https://dev.ckeditor.com/ticket/13603): Added support for uploading dropped BMP images. Fixed Issues: * [#13590](https://dev.ckeditor.com/ticket/13590): Fixed: Various issues related to the [Paste from Word](https://ckeditor.com/cke4/addon/pastefromword) feature. Fixes also: * [#11215](https://dev.ckeditor.com/ticket/11215), * [#8780](https://dev.ckeditor.com/ticket/8780), * [#12762](https://dev.ckeditor.com/ticket/12762). * [#13386](https://dev.ckeditor.com/ticket/13386): [Edge] Fixed: Issues with selecting and editing images. * [#13568](https://dev.ckeditor.com/ticket/13568): Fixed: The [`editor.getSelectedHtml()`](https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_editor.html#method-getSelectedHtml) method returns invalid results for entire content selection. * [#13453](https://dev.ckeditor.com/ticket/13453): Fixed: Drag&drop of entire editor content throws an error. * [#13465](https://dev.ckeditor.com/ticket/13465): Fixed: Error is thrown and the widget is lost on drag&drop if it is the only content of the editor. * [#13414](https://dev.ckeditor.com/ticket/13414): Fixed: Content auto paragraphing in a nested editable despite editor configuration. * [#13429](https://dev.ckeditor.com/ticket/13429): Fixed: Incorrect selection after content insertion by the [Auto Embed](https://ckeditor.com/cke4/addon/autoembed) plugin. * [#13388](https://dev.ckeditor.com/ticket/13388): Fixed: [Table Resize](https://ckeditor.com/cke4/addon/tableresize) integration with [Undo](https://ckeditor.com/cke4/addon/undo) is broken. Other Changes: * [#13637](https://dev.ckeditor.com/ticket/13637): Several icons were refactored. * Updated [Bender.js](https://github.com/benderjs/benderjs) to 0.3.0 and introduced the ability to run tests via HTTPs ([#13265](https://dev.ckeditor.com/ticket/13265)). ## CKEditor 4.5.2 Fixed Issues: * [#13609](https://dev.ckeditor.com/ticket/13609): [Edge] Fixed: The browser crashes when switching to the source mode. Thanks to [Andrew Williams and Mark Smeed](http://webxsolution.com/)! * [PR#201](https://github.com/ckeditor/ckeditor4/pull/201): Fixed: Buttons in the toolbar configurator cause form submission. Thanks to [colemanw](https://github.com/colemanw)! * [#13422](https://dev.ckeditor.com/ticket/13422): Fixed: A monospaced font should be used in the `