Cross-site scripting (XSS) vulnerability in scp/ajax.php in osTicket before 1.6.0 Stable allows remote authenticated users to inject arbitrary web script or HTML via the f parameter, possibly related to an error message generated by scp/admin.php.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2010-0637
http://www.securityfocus.com/bid/38166
http://secunia.com/advisories/38515
http://packetstormsecurity.org/1002-exploits/osTicket-1.6-RC5-ReflectedXSS.pdf