source: https://www.securityfocus.com/bid/40612/info
CuteSITE CMS is prone to an SQL-injection vulnerability and a cross-site scripting vulnerability because it fails to sufficiently sanitize user-supplied input.
Exploiting these vulnerabilities could allow an attacker to steal cookie-based authentication credentials, compromise the application, access or modify data, or exploit latent vulnerabilities in the underlying database.
CuteSITE CMS 1.5.0 is vulnerable; prior versions may also be affected.
http://www.example.com/manage/add_user.php?user_id=-1+union+select+1,2,3,4,5,6,7,8,9,10,11,12,13,user%28%29,15,16