VBScan is a black box vBulletin vulnerability scanner written in perl.
You can download it from the following link: https://packetstormsecurity.com/files/download/139307/vbscan-0.1.7.1.tar.gz
Source: https://packetstormsecurity.com/files/139307/VBScan-Vulnerability-Scanner-0.1.7.1.html