CVE-2017-8811
The implementation of raw message parameter expansion in MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2 allows HTML mangling attacks.
Date published : 2017-11-15
https://lists.wikimedia.org/pipermail/mediawiki-announce/2017-November/000216.html