Cross-site scripting (XSS) vulnerability in the UI messages functionality in Roundcube Webmail before 0.5.4 allows remote attackers to inject arbitrary web script or HTML via the _mbox parameter to the default URI.
http://www.securityfocus.com/bid/49229
http://www.openwall.com/lists/oss-security/2011/08/19/15
http://www.openwall.com/lists/oss-security/2011/08/18/5
http://trac.roundcube.net/changeset/5037
http://trac.roundcube.net/browser/tags/roundcubemail/v0.5.4/CHANGELOG
http://support.apple.com/kb/HT5130
http://sourceforge.net/news/?group_id=139281&id=302769
http://lists.apple.com/archives/security-announce/2012/Feb/msg00000.html