The Salon Booking System, Appointment Scheduling for Salons, Spas & Small Businesses WordPress plugin before 1.9.4 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfilteredhtml capability is disallowed (for example in multisite setup).

The Salon booking system WordPress plugin through 9.6.5 does not sanitise and escape some of its settings, which could allow high privilege users such as Editor to perform Stored Cross-Site Scripting attacks even when the unfilteredhtml capability is disallowed (for example in multisite setup)

The Salon booking system WordPress plugin through 9.6.5 does not have CSRF check in place when updating its settings, which could allow attackers to make a logged in admin change them via a CSRF attack

The Salon booking system WordPress plugin before 9.6.3 does not properly sanitize and escape the 'Mobile Phone' field and 'smsprefix' parameter when booking an appointment, allowing customers to conduct Stored Cross-Site Scripting attacks. The payload gets triggered when an admin visits the 'Bookings' page and the malicious script is executed in the admin context.

The Salon booking system WordPress plugin before 9.6.3 does not properly sanitize and escape the 'Mobile Phone' field when booking an appointment, allowing customers to conduct Stored Cross-Site Scripting attacks. The payload gets triggered when an admin visits the 'Customers' page and the malicious script is executed in the admin context.