Multiple SQL injection vulnerabilities in config.php in NukedWeb GuestBookHost 2005.04.25 allow remote attackers to execute arbitrary SQL commands via the (1) email and (2) password parameters.
https://exchange.xforce.ibmcloud.com/vulnerabilities/24406
http://www.vupen.com/english/advisories/2006/0465
http://www.securityfocus.com/bid/16545
http://www.securityfocus.com/archive/1/424714/100/0/threaded