CVE-2025-61651 — Cross-site Scripting in Foundation Checkuser

CWE-79 — Cross-site Scripting2 documents2 sources
Severity
0.0N/ANVD
EPSS
0.0%
top 98.41%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Wikimedia Foundation CheckuserMediawiki Checkuser
Timeline
PublishedFeb 3

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 modules/ext.CheckUser/checkuser/checkUserHelper/buildUserElement.Js. This issue affects CheckUser: from * before 1.44.1.

CVSS vector

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

Affected Packages2 packages

▶CVEListV5wikimedia_foundation/checkuser* — 1.44.1
▶NVDmediawiki/checkuser< 1.44.1

🔴Vulnerability Details

1
GHSA
GHSA-rq75-xpj3-jxm4: Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation CheckUser↗2026-02-03
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