WP Review Slider Pro < 12.7.12 - Subscriber+ Stored XSS via Review Form Fields

The wp-review-slider-pro WordPress plugin before 12.7.12 does not perform a capability check on the AJAX handler that saves its review submission forms, and the nonce protecting it is generated for every visitor, allowing any authenticated user, such as a subscriber, to overwrite a live form with field values that are output without escaping on public pages, leading to Stored Cross-Site Scripting.