CVE-2026-4812: Wpengine Advanced Custom Fields Acf

Medium severity, CVSS 5.3. EPSS: 0.9% chance of exploitation in the next 30 days.

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.

Affected products

• Wpengine Advanced Custom Fields Acf: up to and including 6.7.0

Published 2026-04-15. Last modified 2026-06-17.