Description
The Advanced Custom Fields: Extended plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 0.9.2.1. This is due to the 'insert_user' function not restricting the roles with which a user can register. This makes it possible for unauthenticated attackers to supply the 'administrator' role during registration and gain administrator access to the site. Note: The vulnerability can only be exploited if 'role' is mapped to the custom field.
Problem types
CWE-269 Improper Privilege Management
Product status
* (semver)
Timeline
| 2025-12-11: | Vendor Notified |
| 2026-01-19: | Disclosed |
Credits
andrea bocchetti
References
www.wordfence.com/...-3525-4b00-afa8-a908250cc838?source=cve
plugins.trac.wordpress.org/...rm/module-form-action-user.php
plugins.trac.wordpress.org/...es/fields/field-user-roles.php
plugins.trac.wordpress.org/...rm/module-form-action-user.php