The WPFront User Role Editor plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 4.2.1. This is due to missing or incorrect nonce validation on the whitelist_options() function. This makes it possible for unauthenticated attackers to update the default role option that can be leveraged for privilege escalation via a forged request granted they can trick a site administrator into performing an action such as clicking on a link. This is only exploitable on multisite instances.

AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE-352

https://plugins.trac.wordpress.org/browser/wpfront-user-role-editor/trunk/includes/users/class-user-profile.php#L104

https://plugins.trac.wordpress.org/browser/wpfront-user-role-editor/trunk/includes/users/class-user-profile.php#L399

https://plugins.trac.wordpress.org/changeset/3266542/#file142

https://wordpress.org/plugins/wpfront-user-role-editor/#developers

https://www.wordfence.com/threat-intel/vulnerabilities/id/efc7ad9f-714e-474c-87e8-ecbbdfabd550?source=cve