CVE-2025-53487

Summary

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.

Affected Software

VendorProductVersion RangeStatus
Wikimedia FoundationMediawiki - ApprovedRevs extension1.39.x < 1.39.13affected
Wikimedia FoundationMediawiki - ApprovedRevs extension1.42.x < 1.42.7affected
Wikimedia FoundationMediawiki - ApprovedRevs extension1.43.x < 1.43.2affected

Weaknesses

  • CWE-79: CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References