source: https://www.securityfocus.com/bid/7190/info

It has been reported that Web Chat Manager is prone to HTML injection attacks. This problem occurs due to insufficient sanitization of user-supplied input. 

As a result of this insufficiency an attacker may embed HTML code via a HTML form field or URI parameter of the Web Chat Manager user registration page.

It may be possible to steal the unsuspecting user's cookie-based authentication credentials, as well as other sensitive information. Other attacks are also possible.

http://<target>/chat_dir/register.php?register=yes&username=OverG&email=<scr*pt>alert%20
("Test!")</scr*pt>&email1=<scr*pt>alert%20("Test!")</scr*pt>