published October 19, 2013
NVD has not assigned a CVSS score to this record. It sits in the 99.0th percentile for exploit probability.
The install/upgrade.php scripts in vBulletin 4.1 and 5 allow remote attackers to create administrative accounts via the customerid, htmldata[password], htmldata[confirmpassword], and htmldata[email] parameters, as exploited in the wild in October 2013.