{"id":"CVE-2024-45613","aliases":["GHSA-rgg8-g5x8-wr9v"],"url":"https://o3.security/vulnerability/CVE-2024-45613","summary":"CKEditor 5 has Cross-site Scripting vulnerability in the clipboard package","details":"### Impact\nDuring a recent internal audit, we identified a Cross-Site Scripting (XSS) vulnerability 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.\n\nThis vulnerability affects **only** installations where the editor configuration meets the following criteria:\n\n1. The [**Block Toolbar**](https://ckeditor.com/docs/ckeditor5/latest/getting-started/setup/toolbar.html#block-toolbar) plugin is enabled.\n1. One of the following plugins is also enabled:\n    - [**General HTML Support**](https://ckeditor.com/docs/ckeditor5/latest/features/html/general-html-support.html) with a configuration that permits unsafe markup.\n    - [**HTML Embed**](https://ckeditor.com/docs/ckeditor5/latest/features/html/html-embed.html).\n\n### Patches\nThe problem has been recognized and patched. The fix will be available in version 43.1.1 (and above), and explicitly in version 41.3.2.\n\n### Workarounds\nIt's highly recommended to update to the version 43.1.1 or higher. However, if the update is not an option, we recommend disabling the block toolbar plugin.\n\n### For more information\nEmail us at [security@cksource.com](mailto:security@cksource.com) if you have any questions or comments about this advisory.\n","published":"2024-09-25T13:27:03.546Z","modified":"2026-08-12T03:51:11.326996180Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"ckeditor5","fixedVersion":"43.1.1"},{"ecosystem":"npm","name":"@ckeditor/ckeditor5-clipboard","fixedVersion":"43.1.1"}],"fix":null,"references":[{"type":"WEB","url":"https://github.com/ckeditor/ckeditor5/releases/tag/v43.1.1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/45xxx/CVE-2024-45613.json"},{"type":"ADVISORY","url":"https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-rgg8-g5x8-wr9v"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-45613"},{"type":"PACKAGE","url":"https://github.com/ckeditor/ckeditor5"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:11.326996180Z"}}