CVE-2020-35622
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.
Date published : 2020-12-21
https://gerrit.wikimedia.org/r/c/mediawiki/extensions/GlobalUsage/+/646744