CVE-2013-4573
Cross-site scripting (XSS) vulnerability in the ZeroRatedMobileAccess extension for MediaWiki 1.19.x before 1.19.9, 1.20.x before 1.20.8, and 1.21.x before 1.21.3 allows remote attackers to inject arbitrary web script or HTML via the "to" parameter to index.php.
Date published : 2013-11-25
https://bugzilla.wikimedia.org/show_bug.cgi?id=55991
http://lists.wikimedia.org/pipermail/mediawiki-announce/2013-November/000135.html