CVE-2025-62697: The Wikimedia Foundation Mediawiki - Languageselector Extension

High severity, CVSS 8.8. EPSS: 0.3% chance of exploitation in the next 30 days.

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') vulnerability in The Wikimedia Foundation Mediawiki - LanguageSelector Extension allows Code Injection.This issue affects Mediawiki - LanguageSelector Extension: from master before 1.39.

Affected products

• The Wikimedia Foundation Mediawiki - Languageselector Extension

Published 2025-10-20. Last modified 2026-10-08.