VBulletin version 3.0 Beta 2 is susceptible to a cross site scripting vulnerability in its new member page (register.php).
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/31535/vbulletin.txt
Source: https://packetstormsecurity.com/files/31535/vbulletin.txt.html