Unfixed XSS vulnerability at cinestar.de

Security researcher bursali, has submitted on 04/01/2011 a cross-site-scripting (XSS) vulnerability affecting cinestar.de, which at the time of submission ranked 17437 on the web according to Alexa.
We manually validated and published a mirror of this vulnerability on 11/12/2011. It is currently unfixed.
If you believe that this security issue has been corrected, please send us an e-mail.

Vulnerable URL: http://cinestar.de/de/kino/berlin-imax-3d-im-sony-center/filme/?tpl=131&filmid=454241&prefix="><script>alert(document.cookie)</script>