Secunia Security Advisory – snatcher has discovered a vulnerability in dnGuestbook, which can be exploited by malicious people to conduct SQL injection attacks.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/45324/sa19601.txt
Source: https://packetstormsecurity.com/files/45324/Secunia-Security-Advisory-19601.html