CVE-2025-25299

LOW EPSS 42.2%
Published Feb 20, 20251y ago · Modified Jun 17, 20261w ago
2.3 CVSS 4.0
Low
Find Similar
Published Feb 20, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

CKEditor 5 is a modern JavaScript rich-text editor with an MVC architecture. During a recent internal audit, a Cross-Site Scripting (XSS) vulnerability was discovered in the CKEditor 5 real-time collaboration package. This vulnerability affects user markers, which represent users' positions within the document. It can lead to unauthorized JavaScript code execution, which might happen with a very specific editor and token endpoint configuration. This vulnerability affects only installations with Real-time collaborative editing enabled. The problem has been recognized and patched. The fix is available in version 44.2.1 (and above). Users are advised to upgrade. There are no known workarounds for this vulnerability.

CVSS Details

Base Score
2.3
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction P
Scope X

Threat Intelligence

EPSS Exploit Probability
42.2% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 2

CWE-79 Cross-site Scripting Injection
CWE-80

References 3

  • ckeditor.com https://ckeditor.com/docs/ckeditor5/latest/features/collaboration/real-time-collaboration/real-time-collaboration.html
  • github.com https://github.com/ckeditor/ckeditor5/releases/tag/v44.2.1
  • github.com https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-j3mm-wmfm-mwvh

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.