AI ChatBot <= 4.8.9 - Unauthenticated Sensitive Information Exposure via qcld_wb_chatbot_check_user

The ChatBot plugin for WordPress is vulnerable to Sensitive Information Exposure in versions up to, and including, 4.8.9 via the qcld_wb_chatbot_check_user function. This can allow unauthenticated attackers to extract sensitive data including confirmation as to whether a user name exists on the site as well as order information for existing users.