CVE-2025-25299 – @ckeditor/ckeditor5-real-time-collaboration

Package

Manager: npm
Name: @ckeditor/ckeditor5-real-time-collaboration
Vulnerable Version: >=41.3.0 <44.2.1

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N/E:U/RL:O/RC:C

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

EPSS: 0.00219 pctl0.44532

Details

Cross-site scripting (XSS) in the CKEditor 5 real-time collaboration package ### Impact During a recent internal audit, we identified a Cross-Site Scripting (XSS) vulnerability in the CKEditor 5 real-time collaboration package. This vulnerability can lead to unauthorized JavaScript code execution and affects user markers, which represent users' positions within the document. This vulnerability affects only installations with [Real-time collaborative editing](https://ckeditor.com/docs/ckeditor5/latest/features/collaboration/real-time-collaboration/real-time-collaboration.html) enabled. ### Patches The problem has been recognized and patched. The fix will be available in version 44.2.1 (and above). ### For more information Email us at [security@cksource.com](mailto:security@cksource.com) if you have any questions or comments about this advisory.

Metadata

Created: 2025-02-20T20:16:31Z
Modified: 2025-02-20T22:53:45Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/02/GHSA-j3mm-wmfm-mwvh/GHSA-j3mm-wmfm-mwvh.json
CWE IDs: ["CWE-79", "CWE-80"]
Alternative ID: GHSA-j3mm-wmfm-mwvh
Finding: F008
Auto approve: 1