GHSA-x9gp-vjh6-3wv6 CKEditor 5 cross-site scripting (XSS) vulnerability in the clipboard package

• npm ckeditor5: >= 46.0.0, < 46.0.3 → fixed in 46.0.3 • npm @ckeditor/ckeditor5-clipboard: >= 44.2.0, < 45.2.2 → fixed in 45.2.2 • npm ckeditor5: >= 44.2.0, < 45.2.2 → fixed in 45.2.2 • npm @ckeditor/ckeditor5-clipboard: >= 46.0.0, < 46.0.3 → fixed in 46.0.3

Impact A Cross-Site Scripting (XSS) vulnerability has been discovered in the CKEditor 5 clipboard package. This vulnerability could be triggered by a specific user action, leading to unauthorized JavaScript code execution, if the attacker managed to insert a malicious content into the editor, which might happen with a very specific editor configuration. This vulnerability affects only installations where the editor configuration meets one of the following criteria: • HTML embed plugin is enabled • Custom plugin introducing editable element which implements view `RawElement` is enabled Patches The problem has been recognized and patched. The fix will be available in version 46.0.3 (and above), and explicitly in version 45.2.2. For more information Email us at [email protected] if you have any questions or comments about this advisory.