Multiple cross-site scripting (XSS) vulnerabilities in SilverStripe before 2.3.5 allow remote attackers to inject arbitrary web script or HTML via (1) the CommenterURL parameter to PostCommentForm, and in the Forum module before 0.2.5 in SilverStripe before 2.3.5 allow remote attackers to inject arbitrary web script or HTML via (2) the Search parameter to forums/search (aka the search script).
https://exchange.xforce.ibmcloud.com/vulnerabilities/55839
https://exchange.xforce.ibmcloud.com/vulnerabilities/55838
http://www.silverstripe.org/security-releases/
http://www.securityfocus.com/bid/37923
http://www.securityfocus.com/archive/1/509139/100/0/threaded
http://secunia.com/advisories/38347
http://secunia.com/advisories/38290
http://open.silverstripe.org/wiki/ChangeLog/2.3.5
http://groups.google.com/group/silverstripe-announce/browse_thread/thread/f51749342eee9456