CVE-2025-53487

Published: Jul 7, 2025Modified: Jun 17, 2026Deferred

5.4

Vector

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

Exploitability: 2.3 / Impact: 2.7

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Description

The ApprovedRevs extension for MediaWiki is vulnerable to stored XSS in multiple locations where system messages are inserted into raw HTML without proper escaping. Attackers can exploit this by injecting JavaScript payloads via the uselang=x-xss language override, which causes crafted message keys to be rendered unescaped. This issue affects Mediawiki - ApprovedRevs 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.

Related CWEs

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

References (2)

https://gerrit.wikimedia.org/r/q/Ifcab085111e7898da485a5e2ae287fee4e6d167b

Source: c4f26cc8-17ff-4c99-b5e2-38fc1793eacc

https://phabricator.wikimedia.org/T394383

Source: c4f26cc8-17ff-4c99-b5e2-38fc1793eacc

Timeline

No history available yet.