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CVE-2025-61650

Low

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.

SeverityLow
CVSS1.1
Exploit probability—
ProductCheckUser
PublishedFeb 3, 2026
First seenFeb 3, 2026
Weakness typeCWE-79Cross-site scripting (XSS)

How to fix

Update
  • Wikimedia Foundation CheckUser795bf333272206a0189050d975e94b70eb7dc507 or later

Affected products

ProductAffected versionsFixed in
Wikimedia Foundation CheckUserv < 795bf333272206a0189050d975e94b70eb7dc507795bf333272206a0189050d975e94b70eb7dc507

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