CVE-2020-35622: Mediawiki

Medium severity, CVSS 6.1. EPSS: 0.7% chance of exploitation in the next 30 days.

An issue was discovered in the GlobalUsage extension for MediaWiki through 1.35.1. SpecialGlobalUsage.php calls WikiMap::makeForeignLink unsafely. The $page variable within the formatItem function was not being properly escaped, allowing for XSS under certain conditions.

Affected products

• Mediawiki Mediawiki: up to and including 1.35.1

Published 2020-12-21. Last modified 2026-06-17.