CVE-2025-53487 — ApprovedRevs: Stored Cross-Site Scripting (XSS) via unsanitized system messages
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 ca…
Published: 2025-07-07 · CVSS: 5.4 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7