CVE-2025-62698: The Wikimedia Foundation Mediawiki - Externalguidance

Medium severity, CVSS 6.9. EPSS: 0.3% 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 - ExternalGuidance allows Stored XSS.This issue affects Mediawiki - ExternalGuidance: from master before 1.39.

Affected products

• The Wikimedia Foundation Mediawiki - Externalguidance

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