source: https://www.securityfocus.com/bid/7589/info
The Web_Links module for PHP-Nuke has been reported prone to a vulnerability which, when exploited, may disclose sensitive path information to a remote attacker.
An attacker may use the information gathered in this manner to mount further attacks against the host.
It should be noted that although PHP-Nuke version 6.x has been reported vulnerable, other versions might also be affected.
http://www.example.com/modules.php?op=modload&name=Web_Links&file=index&l_op=viewlink&cid=[any_words]
http://www.example.com/modules.php?op=modload&name=Web_Links&file=index&l_op=viewlink