Cross-site scripting (XSS) vulnerability in the Special:Block implementation in the getContribsLink function in SpecialBlockip.php in MediaWiki 1.14.0 and 1.15.0 allows remote attackers to inject arbitrary web script or HTML via the ip parameter.
https://exchange.xforce.ibmcloud.com/vulnerabilities/51687
https://bugzilla.wikimedia.org/show_bug.cgi?id=19693
http://www.vupen.com/english/advisories/2009/1882
http://www.securityfocus.com/bid/35662
http://secunia.com/advisories/35818
http://lists.wikimedia.org/pipermail/mediawiki-announce/2009-July/000087.html