CVE-2026-16774 WPBot <= 8.5.9 - Missing Authorization to Unauthenticated Email Relay via wpcs_send_email AJAX Action

The Chatbot plugin for WordPress is vulnerable to Missing Authorization in versions up to, and including, 8.5.9 via the wpcssendemail AJAX handler. This is due to the wpcssendemail function being registered on both wpajaxwpcssendemail and wpajaxnoprivwpcssendemail with no nonce verification,...