source: https://www.securityfocus.com/bid/39415/info

Vana CMS is prone to a vulnerability that lets attackers download arbitrary files. The issue occurs because the application fails to sufficiently sanitize user-supplied input.

Exploiting this issue will allow an attacker to view arbitrary files within the context of the application. Information harvested may aid in launching further attacks

http://www.example.com/download.php?filename=File.php