wpengine Advanced Custom Fields Plugin up to 6.7.0 on WordPress Configuration authorization

Summaryinfo

A vulnerability classified as critical has been found in wpengine Advanced Custom Fields Plugin up to 6.7.0 on WordPress. Impacted is an unknown function of the component Configuration Handler. Performing a manipulation results in authorization. This vulnerability is known as CVE-2026-4812. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability classified as critical has been found in wpengine Advanced Custom Fields Plugin up to 6.7.0 on WordPress. This affects some unknown processing of the component Configuration Handler. The manipulation with an unknown input leads to a authorization vulnerability. CWE is classifying the issue as CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The Advanced Custom Fields (ACF) plugin for WordPress is vulnerable to Missing Authorization to Arbitrary Post/Page Disclosure in versions up to and including 6.7.0. This is due to AJAX field query endpoints accepting user-supplied filter parameters that override field-configured restrictions without proper authorization checks. This makes it possible for unauthenticated attackers with access to a frontend ACF form to enumerate and disclose information about draft/private posts, restricted post types, and other data that should be restricted by field configuration.

The weakness was published by Fernando Mecozzi. It is possible to read the advisory at wordfence.com. This vulnerability is uniquely identified as CVE-2026-4812 since 03/25/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/15/2026).

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

Vendor

• wpengine

Name

• Advanced Custom Fields Plugin

Version

• 6.0
• 6.1
• 6.2
• 6.3
• 6.4
• 6.5
• 6.6
• 6.7.0

CPE 2.3info

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CPE 2.2info

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Entryinfo

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