Multiple directory traversal vulnerabilities in DB Top Sites 1.0, when magic_quotes_gpc is disabled, allow remote attackers to include and execute arbitrary local files via a .. (dot dot) in the u parameter to (1) full.php, (2) index.php, and (3) contact.php.

Static code injection vulnerability in add_reg.php in DB Top Sites 1.0 allows remote attackers to inject arbitrary PHP code via a crafted (1) url and (2) location parameter.

Cross-site scripting (XSS) vulnerability in index.php in JNM Guestbook 3.0 allows remote attackers to inject arbitrary web script or HTML via the page parameter.