Cross-site scripting (XSS) vulnerability in the httpError method in sapphire/core/control/RequestHandler.php in SilverStripe 2.3.x before 2.3.10 and 2.4.x before 2.4.4, when custom error handling is not used, allows remote attackers to inject arbitrary web script or HTML via "missing URL actions."
https://exchange.xforce.ibmcloud.com/vulnerabilities/63988
https://euvd.enisa.europa.eu/vulnerability/EUVD-2010-4788
http://www.securityfocus.com/bid/45367
http://www.openwall.com/lists/oss-security/2012/05/01/3
http://www.openwall.com/lists/oss-security/2012/04/30/3
http://www.openwall.com/lists/oss-security/2012/04/30/1
http://www.openwall.com/lists/oss-security/2011/01/03/12
http://secunia.com/advisories/42346
http://open.silverstripe.org/changeset/114444
http://doc.silverstripe.org/framework/en/trunk/changelogs//2.4.4