CVE-2025-61651

0.0 infoEPSS 0.2%

Info (0.0) in mediawiki checkuser. EPSS 0.2% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

0.0 none

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/E:U

CVSS 3.1

6.1 medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 11% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2026-02-03
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

mediawiki:checkuser

References

https://phabricator.wikimedia.org/T403408

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