Security Advisory

CVE-2025-53478

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2025-07-07 18:16:33

Last updated 2025-07-07 20:49:34

Assigner wikimedia-foundation

CVSS score not scored

State PUBLISHED

Description

The CheckUser extension’s Special:Investigate interface is vulnerable to reflected XSS due to improper escaping of certain internationalized system messages rendered on the “IPs and User agents” tab. This issue affects Mediawiki - CheckUser extension: from 1.39.X before 1.39.13, from 1.42.X before 1.42.7, from 1.43.X before 1.43.2.

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