In MediaWiki before 1.31.10 and 1.32.x through 1.34.x before 1.34.4, XSS related to jQuery can occur. The attacker creates a message with [javascript:payload xss] and turns it into a jQuery object with mw.message().parse(). The expected result is that the jQuery object does not contain an <a> tag (or it does not have a href attribute, or it's empty, etc.). The actual result is that the object contains an <a href ="javascript... that executes when clicked. References: https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048480.html https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048488.html https://www.mediawiki.org/wiki/ResourceLoader/Core_modules#mediawiki.jqueryMsg
Created mediawiki tracking bugs for this issue: Affects: fedora-all [bug 1903775]
Upstream commit: https://gerrit.wikimedia.org/r/c/mediawiki/core/+/629730
Statement: The mediawiki package was removed from OpenShift Container Platform in version 4.3.
External References: https://phabricator.wikimedia.org/T86738