SourceCodester Best Salon Management System add_subscribe.php sql injection

A vulnerability, which was classified as critical, was found in SourceCodester Best Salon Management System 1.0. Affected is an unknown function of the file /panel/add_subscribe.php. The manipulation of the argument user_id/plan_id leads to sql injection. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.