High severity8.8NVD Advisory· Published Feb 3, 2026· Updated Apr 14, 2026

CVE-2025-67478

Description

Vulnerability in Wikimedia Foundation CheckUser. This vulnerability is associated with program files includes/Mail/UserMailer.Php.

This issue affects CheckUser: from * before 1.39.14, 1.43.4, 1.44.1.

MediaWiki/Checkuser2 versions
cpe:2.3:a:mediawiki:checkuser:1.44.0:*:*:*:*:mediawiki:*:*+ 1 more
- cpe:2.3:a:mediawiki:checkuser:1.44.0:*:*:*:*:mediawiki:*:*
- cpe:2.3:a:mediawiki:checkuser:*:*:*:*:*:mediawiki:*:*range: >=1.39.0,<1.39.14

No patches discovered yet.

AI mechanics synthesis has not run for this CVE yet.

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