Multiple cross-site scripting (XSS) vulnerabilities in open.php in eTicket 1.5.5 and 1.5.5.1, when register_globals is enabled, allow remote attackers to inject arbitrary web script or HTML via the (1) err and (2) warn parameters. NOTE: the vendor disputes the significance of the issue, stating that "eTicket is not designed to work with register_globals On."
https://exchange.xforce.ibmcloud.com/vulnerabilities/35121
http://www.vupen.com/english/advisories/2007/2372
http://www.securityfocus.com/archive/1/473095/100/0/threaded
http://www.securityfocus.com/archive/1/472514/100/0/threaded
http://www.securityfocus.com/archive/1/472434/100/0/threaded
http://www.netvigilance.com/advisory0031