source: https://www.securityfocus.com/bid/22218/info

Virtual Host Administrator is prone to a remote file-include vulnerability because it fails to sufficiently sanitize user-supplied data.

Exploiting this issue may allow an attacker to compromise the application and the underlying system; other attacks are also possible.

This issue affects version 0.1; other versions may also be vulnerable. 

http://www.example.com/modules/mail/main.php?MODULES_DIR=shell.txt