PHP remote file inclusion vulnerability in signup.php in CLBOX 1.01 allows remote attackers to execute arbitrary PHP code via a URL in the header parameter. NOTE: this issue has been disputed by a reliable third party, stating that header is defined through an include file before use
http://www.securityfocus.com/archive/1/463076/100/0/threaded
http://www.attrition.org/pipermail/vim/2007-March/001443.html