The Themehunk Login Registration plugin for WordPress is vulnerable to privilege escalation in versions up to, and including, 1.0.2. This is due to the handle_frontend_register() function in the unauthenticated /thlogin/v1/register REST endpoint accepting a user-controlled role parameter and validating it only against get_editable_roles() — which returns every defined editable site role, including editor — before passing it to wp_insert_user(). This makes it possible for unauthenticated attackers, when public user registration is enabled, to create new accounts with the editor role.
Weakness
The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.
Potential Mitigations
Related Attack Patterns
- https://cwe.mitre.org/data/definitions/122.html
- https://cwe.mitre.org/data/definitions/233.html
- https://cwe.mitre.org/data/definitions/58.html
References
- https://plugins.trac.wordpress.org/browser/themehunk-login-registration/tags/1.0.2/includes/class-thlogin-rest-api.php#L243
- https://plugins.trac.wordpress.org/browser/themehunk-login-registration/tags/1.0.2/includes/class-thlogin-rest-api.php#L782
- https://plugins.trac.wordpress.org/browser/themehunk-login-registration/tags/1.0.2/includes/class-thlogin-rest-api.php#L811
- https://plugins.trac.wordpress.org/browser/themehunk-login-registration/tags/1.0.2/includes/class-thlogin-rest-api.php#L82
- https://plugins.trac.wordpress.org/changeset?reponame=\u0026old=3592690%40themehunk-login-registration\u0026new=3592690%40themehunk-login-registration
- https://www.wordfence.com/threat-intel/vulnerabilities/id/8eee3809-133e-4fd9-ad49-cc6fe3822457?source=cve