CVE-2026-13706: Mediawiki

High severity, CVSS 8.8. EPSS: 0.5% chance of exploitation in the next 30 days.

Improper input validation vulnerability in Wikimedia Foundation UrlShortener. This vulnerability is associated with program files includes/UrlShortenerUtils.Php.

Affected products

• Mediawiki Mediawiki: from 1.43.0, before 1.43.9 (fixed in 1.43.9); from 1.44.0, before 1.44.6 (fixed in 1.44.6); from 1.45.0, before 1.45.4 (fixed in 1.45.4); version 1.46.0 only

Published 2026-07-01. Last modified 2026-07-09.