Sven Moderow GuestBook 0.3a stores sensitive information under the web root with insufficient access control, which allows remote attackers to download a database containing passwords via a direct request for (1) gbook97.mdb or (2) gbook.mdb in ~db/.
https://exchange.xforce.ibmcloud.com/vulnerabilities/31245
http://www.securityfocus.com/archive/1/455788/100/0/threaded