Cross-site request forgery (CSRF) vulnerability in the CheckUser extension for MediaWiki allows remote attackers to hijack the authentication of certain users for requests that retrieve sensitive user information via unspecified vectors.
https://security.gentoo.org/glsa/201510-05
https://phabricator.wikimedia.org/T85858
https://lists.wikimedia.org/pipermail/mediawiki-announce/2015-March/000175.html
http://www.securityfocus.com/bid/73477
http://www.openwall.com/lists/oss-security/2015/04/07/3
http://www.openwall.com/lists/oss-security/2015/04/01/1
http://www.mandriva.com/security/advisories?name=MDVSA-2015:200