CVE-2025-62661: The Wikimedia Foundation Mediawiki - Thanks Extension, Mediawiki - Growth Experiments Extension

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

Incorrect Default Permissions vulnerability in The Wikimedia Foundation Mediawiki - Thanks Extension, Mediawiki - Growth Experiments Extension allows Accessing Functionality Not Properly Constrained by ACLs.This issue affects Mediawiki - Thanks Extension, Mediawiki - Growth Experiments Extension: from 1.43 before 1.44.

Affected products

• The Wikimedia Foundation Mediawiki - Thanks Extension, Mediawiki - Growth Experiments Extension: from 1.43, before 1.44 (fixed in 1.44)

Published 2025-10-21. Last modified 2026-10-08.