Easy Registration Forms <= 2.1.1 - Authenticated (Subscriber+) Information Disclosure via Shortcode

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.