Unfixed XSS vulnerability at kuzeyhosting.com

Security researcher S1B3RK4N, has submitted on 09/04/2009 a cross-site-scripting (XSS) vulnerability affecting kuzeyhosting.com, which at the time of submission ranked 0 on the web according to Alexa.
We manually validated and published a mirror of this vulnerability on 21/11/2011. It is currently unfixed.
If you believe that this security issue has been corrected, please send us an e-mail.

Vulnerable URL: http://kuzeyhosting.com//signinform.php?msg="><script>alert(/XSS/)</script>