Cross-site scripting (XSS) vulnerability in the wikitext parser in MediaWiki 1.17.x before 1.17.3 and 1.18.x before 1.18.2 allows remote attackers to inject arbitrary web script or HTML via a crafted page with "forged strip item markers," as demonstrated using the CharInsert extension.
https://exchange.xforce.ibmcloud.com/vulnerabilities/74288
https://bugzilla.wikimedia.org/show_bug.cgi?id=35315
http://www.securityfocus.com/bid/52689
http://www.openwall.com/lists/oss-security/2012/03/24/1
http://www.openwall.com/lists/oss-security/2012/03/22/9
http://secunia.com/advisories/48504
http://lists.wikimedia.org/pipermail/mediawiki-announce/2012-March/000110.html
http://lists.wikimedia.org/pipermail/mediawiki-announce/2012-March/000109.html