wp-comments-post.php in WordPress before 3.3.2 supports offsite redirects, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks via unspecified vectors.
https://exchange.xforce.ibmcloud.com/vulnerabilities/75202
https://exchange.xforce.ibmcloud.com/vulnerabilities/75092
http://www.securityfocus.com/bid/53192
http://www.debian.org/security/2012/dsa-2470
http://wordpress.org/news/2012/04/wordpress-3-3-2/
http://secunia.com/advisories/49138
http://secunia.com/advisories/48957
http://core.trac.wordpress.org/changeset/20486/branches/3.3/wp-comments-post.php