Incomplete blacklist vulnerability in includes/upload/UploadBase.php in MediaWiki before 1.19.24, 1.2x before 1.23.9, and 1.24.x before 1.24.2 allows remote attackers to inject arbitrary web script or HTML via an application/xml MIME type for a nested SVG with a data: URI.
www.mandriva.com/security/advisories?name=MDVSA-2015:200
www.openwall.com/lists/oss-security/2015/04/01/1
www.openwall.com/lists/oss-security/2015/04/07/3
www.securityfocus.com/bid/73477
lists.wikimedia.org/pipermail/mediawiki-announce/2015-March/000175.html
phabricator.wikimedia.org/T85850
security.gentoo.org/glsa/201510-05