XSS Vulnerability in MediaWiki through 1.37 via External Identifier Property

CVE-2021-45472 · MEDIUM Severity

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

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.

Learn more about our External Network Penetration Testing.