CVE-2025-62667: The Wikimedia Foundation Mediawiki - Growthexperiments Extension

Medium severity, CVSS 6.9. EPSS: 0.4% chance of exploitation in the next 30 days.

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in The Wikimedia Foundation Mediawiki - GrowthExperiments Extension allows Stored XSS.This issue affects Mediawiki - GrowthExperiments Extension: from master before 1.39.

Affected products

• The Wikimedia Foundation Mediawiki - Growthexperiments Extension

Published 2025-10-18. Last modified 2026-10-09.