We have security measures in place to restrict access to these applications due to their use in remote third party attacks associated with any vunerable scripts in use on our server.
When running a script via cron, it is recommended that clients use the following syntax in their command:
Perl / CGI Scripts:
/usr/local/bin/php -q /home/username/path/to/script.php
In the above commands substitute the path for the correct path to the script you wish to execute.