Missing authorization in Divi Essentials

Summary

The Divi Essential plugin for WordPress is vulnerable to sensitive information exposure in versions up to, and including, 5.8.1 via the dnxte_get_database_tables and dnxte_get_database_data AJAX actions. The handlers only conditionally verify a nonce (the check runs solely when the 'nonce' POST parameter is present and can be trivially bypassed by omitting the parameter) and never call current_user_can() or otherwise enforce a capability. This makes it possible for authenticated attackers, with Subscriber-level access and above, to enumerate every table in the WordPress database and read up to a caller-controlled number of rows from any table — including wp_users (usernames, emails, hashed passwords), wp_usermeta (session tokens, secret keys), and wp_options (privileged settings, API keys, credentials stored by other plugins).