Open redirect vulnerability in SilverStripe CMS & Framework 3.1.13 allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a URL in the returnURL parameter to dev/build.
http://www.securityfocus.com/bid/75419
http://www.securityfocus.com/archive/1/535716/100/0/threaded
http://hyp3rlinx.altervista.org/advisories/AS-SILVERSTRIPE0607.txt