Vulnerability · Published Jan 20, 2026 · Assigned by Wordfence
CVE-2025-14533Advanced Custom Fields: Extended <= 0.9.2.1 - Unauthenticated Privilege Escalation via Insert User Form Action
Critical 9.8
In plain English
A critical-severity privilege mismanagement in Advanced Custom Fields: Extended from hwk-fr. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.5% (higher than 74% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| hwk-fr | Advanced Custom Fields: Extended | 0 – through 0.9.2.1 |
Weakness: CWE-269 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/d44f8af2-3525-4b00-afa8-a908250cc838?source=cve
- https://plugins.trac.wordpress.org/browser/acf-extended/tags/0.9.2.1/includes/modules/form/module-form-action-user.php#L636
- https://plugins.trac.wordpress.org/browser/acf-extended/tags/0.9.2.2/includes/fields/field-user-roles.php#L437
- https://plugins.trac.wordpress.org/browser/acf-extended/tags/0.9.2.2/includes/modules/form/module-form-action-user.php#L356