FlexBB v0.5.5 BETA suffers from SQL injection, login bypass and XSS vulnerabilities.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/45604/FlexBBv0.5.5.txt
Source: https://packetstormsecurity.com/files/45604/FlexBBv0.5.5.txt.html