Cross-site scripting (XSS) vulnerability in functions/mime.php in SquirrelMail before 1.4.22 allows remote attackers to inject arbitrary web script or HTML via a crafted STYLE element in an e-mail message.
https://bugzilla.redhat.com/show_bug.cgi?id=720695
http://www.squirrelmail.org/security/issue/2011-07-10
http://www.mandriva.com/security/advisories?name=MDVSA-2011:123
http://www.debian.org/security/2011/dsa-2291
http://support.apple.com/kb/HT5130
http://squirrelmail.svn.sourceforge.net/viewvc/squirrelmail?view=revision&revision=14121
http://securitytracker.com/id?1025766
http://rhn.redhat.com/errata/RHSA-2012-0103.html
http://lists.apple.com/archives/security-announce/2012/Feb/msg00000.html