WordPress security changelog
MEDIUM CVE-2026-4812 Deferred

Advanced Custom Fields (ACF®): A security weakness

Advanced Custom Fields (ACF®) is affected by a security weakness. The vulnerable path is reachable without authentication. The resulting impact depends on how the affected component exposes the vulnerable operation. The published affected range is <= 6.7.0.

CVE / CNA score 5.3 CVSS 3.1 · security@wordfence.com
NVD score Pending NVD has not published its own CVSS assessment.
Component
Advanced Custom Fields (ACF®)
Plugin slug
advanced-custom-fields
Affected
<= 6.7.0
Safe version
> 6.7.0
Published
Apr 15, 2026
Weakness
CWE-862 — Missing Authorization

This CVE was published Apr 15, 2026 and is one of 20 known issues for this plugin.

What to do

Update, patch or deactivate.

Update Advanced Custom Fields (ACF®) to a release after 6.7.0, or disable and remove it until a fixed version is available.

A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Source record

Technical description

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.

CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References

Primary and upstream sources