The WS Form LITE – Drag & Drop Contact Form Builder for WordPress plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability check on the 'get_config' function in all versions up to, and including, 1.10.35. This makes it possible for unauthenticated attackers to read the value of the plugin's settings, including API keys for integrated services.
https://plugins.trac.wordpress.org/changeset/3280355/
https://plugins.trac.wordpress.org/browser/ws-form/trunk/ws-form.php
https://plugins.trac.wordpress.org/browser/ws-form/trunk/includes/class-ws-form-config.php
https://plugins.trac.wordpress.org/browser/ws-form/trunk/includes/class-ws-form-common.php
https://plugins.trac.wordpress.org/browser/ws-form/trunk/api/class-ws-form-api.php