CVE-2025-25299

published 2025-02-20

CVE-2025-25299: 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…

Priority P4 13 low 2.3 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

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.

Affected

4 ranges

Vendor	Product	Version range	Fixed in
ckeditor	ckeditor5	—	—
ckeditor	ckeditor5	—	—
ckeditor	ckeditor5-real-time-collaboration	>= 41.3.0 < 44.2.1	44.2.1
debian	ckeditor	—	—

CVSS provenance

nvd v4.0 2.3 LOW 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

osv 2.3 LOW

vendor_debian 2.3 LOW

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CWE-79 CWE-80