YaBB 1 Gold SP 1.2 written in Perl suffers from a flaw where data put into the subject line isn’t properly sanitized allowing an attacker to inject newlines, starting a new thread.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/33231/yabbperl.txt
Source: https://packetstormsecurity.com/files/33231/yabbperl.txt.html