Multiple cross-site scripting (XSS) vulnerabilities in WordPress before 3.5.2 allow remote attackers to inject arbitrary web script or HTML via vectors involving (1) uploads of media files, (2) editing of media files, (3) installation of plugins, (4) updates to plugins, (5) installation of themes, or (6) updates to themes.
https://bugzilla.redhat.com/show_bug.cgi?id=976784
http://www.debian.org/security/2013/dsa-2718