CVE-2025-53496: Wikimedia Foundation Mediawiki - Mediasearch Extension

Medium severity, CVSS 5.4. EPSS: 0.2% chance of exploitation in the next 30 days.

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - MediaSearch Extension allows Stored XSS.This issue affects Mediawiki - MediaSearch Extension: from 1.42.X before 1.42.7, from 1.43.X before 1.43.2.

Affected products

• Wikimedia Foundation Mediawiki - Mediasearch Extension: from 1.42, before 1.42.7 (fixed in 1.42.7); from 1.43, before 1.43.2 (fixed in 1.43.2)

Published 2025-07-07. Last modified 2026-06-17.