Cross-site scripting (XSS) vulnerability in the formatHTML function in includes/api/ApiFormatBase.php in MediaWiki before 1.19.12, 1.20.x and 1.21.x before 1.21.6, and 1.22.x before 1.22.3 allows remote attackers to inject arbitrary web script or HTML via a crafted string located after http:// in the text parameter to api.php.
https://gerrit.wikimedia.org/r/#/q/Idf985e4e69c2f11778a8a90503914678441cb3fb%2Cn%2Cz
https://bugzilla.wikimedia.org/show_bug.cgi?id=61362
https://bugzilla.redhat.com/show_bug.cgi?id=1071139
http://www.securityfocus.com/bid/65906
http://openwall.com/lists/oss-security/2014/03/01/2
http://openwall.com/lists/oss-security/2014/02/28/1
http://lists.wikimedia.org/pipermail/mediawiki-announce/2014-February/000141.html