The Easy Registration Forms for WordPress is vulnerable to Information Disclosure via the 'erforms_user_meta' shortcode in versions up to, and including, 2.1.1 due to insufficient controls on the information retrievable via the shortcode. This makes it possible for authenticated attackers, with subscriber-level capabilities or above, to retrieve arbitrary sensitive user meta.
The Easy Registration Forms WordPress plugin is vulnerable to Cross-Site Request Forgery due to missing nonce validation via the ajax_add_form function found in the ~/includes/class-form.php file which made it possible for attackers to inject arbitrary web scripts in versions up to, and including 2.1.1.