WP-Recall – Registration, Profile, Commerce & More <= 16.26.10 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Shortcode Exeuction

The WP-Recall – Registration, Profile, Commerce & More plugin for WordPress is vulnerable to arbitrary shortcode execution due to a missing capability check on the 'rcl_preview_post' AJAX endpoint in all versions up to, and including, 16.26.10. This makes it possible for authenticated attackers, with Subscriber-level access and above, to execute arbitrary shortcodes.