PHP-Nuke Multiple Vulnerabilities

Summary
The host is running PHP-Nuke and is prone to multiple vulnerabilities.
Impact
Successful exploitation will allow attacker to execute arbitrary SQL commands, inject arbitrary web script or hijack the authentication of administrators. Impact Level: Application
Solution
No solution or patch was made available for at least one year since disclosure of this vulnerability. Likely none will be provided anymore. General solution options are to upgrade to a newer release, disable respective features, remove the product or replace the product by another one.
Insight
Multiple flaws are due to, - An improper validation of user-supplied input to 'chng_uid', 'sender_name' and 'sender_email' parameter in the 'admin.php' and 'modules.php'. - An improper validation of user-supplied input to add user accounts or grant the administrative privilege in the 'mainfile.php'.
Affected
PHP-Nuke versions 8.0 and prior.
References