CVE-2025-53487
MEDIUM EPSS 6.7%
Published Jul 7, 202511mo ago · Modified Jun 17, 20262w ago
5.4 CVSS 3.1
Published Jul 7, 2025 11mo ago
Last Modified Jun 17, 2026 2w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction Required
Scope Changed
Confidentiality Low
Integrity Low
Availability None
Threat Intelligence
EPSS Exploit Probability
6.7% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-79 Cross-site Scripting Injection
References 2
- gerrit.wikimedia.org https://gerrit.wikimedia.org/r/q/Ifcab085111e7898da485a5e2ae287fee4e6d167b
- phabricator.wikimedia.org https://phabricator.wikimedia.org/T394383
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.