Exploit Title : Cross Site Scripting ( XSS - Stored ) vulnerability in
vBulletin SEO Plugin vBSEO.
Found By :  Yogesh Jaygadkar | http://www.jaygadkar.com/
Tested versions : vBSEO 3.2.0 & vBSEO 3.6.0
Tested with : vBulletin 4.0.6 & vBulletin 4.2.1
Vulnerable POST Parameter :  sendtrackbacks
Greetz to : Darshit Ashara, Rahul Sasi, Aditya Gondela
                   Team Indishell & garage4hackers

POC :

http://www.VictimVBForum.com/forum/newreply.php?do=postreply&t=[Thread ID]
http://www.VictimVBForum.com/forum/newthread.php?do=newthread&f=

In Advanced Reply Or New Thread page, Put your ">vector in "Trackback"
Options.

Submit the Reply. ( You can also test it by clicking Preview Post button )

Done ;)