The Forms Rb plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.1.9. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with contributor-level access and above, to read form submission records, modify form configuration options, and delete records belonging to any form they do not own.
https://plugins.trac.wordpress.org/browser/forms-rb/trunk/app/api.php#L623
https://plugins.trac.wordpress.org/browser/forms-rb/trunk/app/api.php#L444
https://plugins.trac.wordpress.org/browser/forms-rb/trunk/app/api.php#L41
https://plugins.trac.wordpress.org/browser/forms-rb/trunk/app/api.php#L316
https://plugins.trac.wordpress.org/browser/forms-rb/trunk/app/api.php#L190
https://plugins.trac.wordpress.org/browser/forms-rb/trunk/app/api.php#L128
https://plugins.trac.wordpress.org/browser/forms-rb/tags/1.1.9/app/api.php#L623
https://plugins.trac.wordpress.org/browser/forms-rb/tags/1.1.9/app/api.php#L444
https://plugins.trac.wordpress.org/browser/forms-rb/tags/1.1.9/app/api.php#L41
https://plugins.trac.wordpress.org/browser/forms-rb/tags/1.1.9/app/api.php#L316
https://plugins.trac.wordpress.org/browser/forms-rb/tags/1.1.9/app/api.php#L190
https://plugins.trac.wordpress.org/browser/forms-rb/tags/1.1.9/app/api.php#L128