CVE-2024-34500 Information

Description

An issue was discovered in the UnlinkedWikibase extension in MediaWiki before 1.39.6 1.40.x before 1.40.2 and 1.41.x before 1.41.1. XSS can occur through an interface message. Error messages (in the $err var) are not escaped before being passed to Html::rawElement() in the getError() function in the Hooks class.

Reference

https://phabricator.wikimedia.org/T357203 https://gerrit.wikimedia.org/r/c/mediawiki/extensions/UnlinkedWikibase/+/1002175