CVE-2026-14359: Yith Woocommerce Waitlist Premium

High severity, CVSS 8.8. EPSS: 0.2% chance of exploitation in the next 30 days.

The YITH WooCommerce Waitlist Premium plugin for WordPress is vulnerable to Privilege Escalation in versions up to, and including, 3.35.0. This is due to the add_user_in_waiting_list() function registered on the wp_ajax_yith_wcwtl_add_user action being missing both a capability check and a nonce verification, and using parse_str() + extract() to import attacker-controlled variables from $_POST['params'] that are then passed to wp_create_user() and $user->set_role(). This makes it possible for authenticated attackers, with Subscriber-level access and above, to elevate their privileges to that of an administrator by creating a new user account and assigning it the administrator role.

Affected products

• Yith Yith Woocommerce Waitlist Premium: up to and including 3.35.0

Published 2026-09-09. Last modified 2026-09-09.