CVE-2025-61650CWE-79

UserInfoCard is vulnerable to message key stored XSS

Low · published February 3, 2026

CVSS v4.0
1.1
EPSS
0%
Percentile
20.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
1.1 · LOW
Vector
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
EPSS
0.00286 · 20.1th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-02-03T00:15Z
EPSS history
Timeline
  • 03 FEB 00:15Z
    UserInfoCard is vulnerable to message key stored XSS
    cvelistv5