XSS Vulnerability in Wikimedia Foundation Mediawiki - FeaturedFeeds Extension
CVE-2025-53502

6.5MEDIUM

Key Information:

Vendor

Wikimedia Foundation

Status
Mediawiki - Featuredfeeds Extension
Vendor
CVE Published:
3 July 2025

What is CVE-2025-53502?

An improper input validation vulnerability in the FeaturedFeeds Extension of Wikimedia Foundation's Mediawiki allows for Cross-Site Scripting (XSS). This security flaw affects versions 1.39.X, 1.42.X, and 1.43.X, enabling attackers to inject malicious scripts potentially compromising user data and session integrity.

Affected Version(s)

Mediawiki - FeaturedFeeds Extension 1.39.x

Mediawiki - FeaturedFeeds Extension 1.42.x

Mediawiki - FeaturedFeeds Extension 1.43.x

References

https://phabricator.wikimedia.org/T392279
https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Fea...

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Legoktm
.
CVE-2025-53502 : XSS Vulnerability in Wikimedia Foundation Mediawiki - FeaturedFeeds Extension