Meks Easy Photo Feed Widget < 1.2.4 - Subscriber+ Settings Update to Stored XSS

The Meks Easy Photo Feed Widget WordPress plugin before 1.2.4 does not have capability and CSRF checks in the meks_save_business_selected_account AJAX action, available to any authenticated user, and does not escape some of the settings. As a result, any authenticated user, such as subscriber could update the plugin's settings and put Cross-Site Scripting payloads in them