Advanced Custom Fields: Extended Plugin up to 0.9.2.1 on WordPress insert_user privileges management

Summaryinfo

A vulnerability marked as critical has been reported in Advanced Custom Fields: Extended Plugin up to 0.9.2.1 on WordPress. Affected by this vulnerability is the function insert_user. The manipulation leads to Remote Code Execution. This vulnerability is documented as CVE-2025-14533. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Advanced Custom Fields: Extended Plugin up to 0.9.2.1 on WordPress. It has been rated as critical. This issue affects the function insert_user. The manipulation with an unknown input leads to a remote code execution vulnerability. Using CWE to declare the problem leads to CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at wordfence.com. The identification of this vulnerability is CVE-2025-14533. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 01/20/2026). The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• WordPress Plugin

Name

• Advanced Custom Fields: Extended Plugin

Version

• 0.9.2.0
• 0.9.2.1

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CPE 2.2info

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