UseBB versions 0.5.1 and below suffer from multiple SQL injection and cross site scripting vulnerabilities.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/39002/advisory_122005.60.txt
Source: https://packetstormsecurity.com/files/39002/Hardened-PHP-Project-Security-Advisory-2005-12.60.html