CVE-2025-61650

UserInfoCard is vulnerable to message key stored XSS

State: Published
Severity: 1.1 Low
Published: Feb 3, 2026
Updated: Feb 3, 2026
Reserved: Sep 29, 2025

Description

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation CheckUser. This vulnerability is associated with program files src/Services/CheckUserUserInfoCardService.Php.

This issue affects CheckUser: from * before 795bf333272206a0189050d975e94b70eb7dc507.

Scores

CVSS	Score	Vector	Source
4.0	1.1 Low	CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U	wikimedia-foundation

Weaknesses

CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')

Affected Products

Product	Versions
CheckUserWikimedia Foundation	before 795bf333272206a0189050d975e94b70eb7dc507Affected

References

https://phabricator.wikimedia.org/T403289

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