Ni Sales Commission For WooCommerce <= 1.2.4 - Missing Authorization to Authenticated (Subscriber+) Commission Update

The Ni Sales Commission For WooCommerce plugin for WordPress is vulnerable to unauthorized access due to a missing capability check on the 'niwoosc_ajax' AJAX endpoint in all versions up to, and including, 1.2.4. This makes it possible for authenticated attackers, with Subscriber-level access and above, to update the plugins settings and modify commission amounts.