CVE-2021-45472: Fedoraproject Fedora

Medium severity, CVSS 6.1. EPSS: 1% chance of exploitation in the next 30 days.

In MediaWiki through 1.37, XSS can occur in Wikibase because an external identifier property can have a URL format that includes a $1 formatter substitution marker, and the javascript: URL scheme (among others) can be used.

Affected products

• Fedoraproject Fedora: version 35 only
• Mediawiki Mediawiki: up to and including 1.37

Published 2021-12-24. Last modified 2026-06-17.