SQL injection vulnerability in the Authorize.net callback code (subscriptions/authorize.php) in Jelsoft vBulletin 3.0 through 3.0.3 allows remote attackers to execute arbitrary SQL statements via the x_invoice_num parameter. NOTE: this issue might be related to CVE-2006-4267.
https://exchange.xforce.ibmcloud.com/vulnerabilities/17365
http://www.vbulletin.com/forum/showthread.php?t=124876
http://www.vbulletin.com/forum/bugs.php?do=view&bugid=3379
http://www.securityfocus.com/bid/11193