Description

The CheckUser extension’s Special:CheckUser interface is vulnerable to reflected XSS via the rev-deleted-user message. This message is rendered without proper escaping, making it possible to inject JavaScript through the uselang=x-xss language override mechanism. This issue affects Mediawiki - CheckUser extension: from 1.42.X before 1.42.7, from 1.43.X before 1.43.2.

INFO

Published Date :

2025-07-08T17:16:36.081Z

Last Modified :

2025-07-10T13:18:39.505Z

Source :

wikimedia-foundation
AFFECTED PRODUCTS

The following products are affected by CVE-2025-53479 vulnerability.

No data.

REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-53479.

URL Resource
https://gerrit.wikimedia.org/r/q/I159e14543912cb3bc7f4a00c3090c0285b154786 cve-icon cve-icon
https://phabricator.wikimedia.org/T394693 cve-icon cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact