An issue was discovered in MediaWiki before 1.31.12 and 1.32.x through 1.35.x before 1.35.2. On ChangesList special pages such as Special:RecentChanges and Special:Watchlist, some of the rcfilters-filter-* label messages are output in HTML unescaped, leading to XSS.
Created mediawiki tracking bugs for this issue:
Affects: fedora-all [bug 1946693]
The mediawiki package was removed from OpenShift Container Platform (OCP) in version 4.3, therefore for OCP 4 has been marked as out of support scope.