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CVE-2026-4812

MEDIUM 5.3 CVSS 3.1
Published
April 15, 2026
Last modified
June 17, 2026
NVD status
Deferred
Reported by
security@wordfence.com
Weakness
CWE-862
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

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.

Affected WordPress components

  • Advanced Custom Fields (ACF®) Plugin · advanced-custom-fields
    Confirmed match Active
    Up to and including 6.7.0
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • wpengine Advanced Custom Fields (ACF®) — Up to and including 6.7.0

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/advanced-custom-fields/tags/6.7.0/includes/fields/class-acf-field-page_link.php#L144
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/advanced-custom-fields/tags/6.7.0/includes/fields/class-acf-field-post_object.php#L155
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/advanced-custom-fields/tags/6.7.0/includes/fields/class-acf-field-post_object.php#L92
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/advanced-custom-fields/tags/6.7.0/includes/fields/class-acf-field-relationship.php#L118
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/advanced-custom-fields/tags/6.7.0/includes/fields/class-acf-field-relationship.php#L171
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/advanced-custom-fields/tags/6.7.0/includes/fields/class-acf-field-relationship.php#L180
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/advanced-custom-fields/tags/6.7.0/includes/fields/class-acf-field-relationship.php#L187
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/advanced-custom-fields/tags/6.7.0/includes/fields/class-acf-field-user.php#L435
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/advanced-custom-fields/trunk/includes/fields/class-acf-field-page_link.php#L144
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/advanced-custom-fields/trunk/includes/fields/class-acf-field-post_object.php#L155
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/advanced-custom-fields/trunk/includes/fields/class-acf-field-post_object.php#L92
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/advanced-custom-fields/trunk/includes/fields/class-acf-field-relationship.php#L118
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/advanced-custom-fields/trunk/includes/fields/class-acf-field-relationship.php#L171
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/advanced-custom-fields/trunk/includes/fields/class-acf-field-relationship.php#L180
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/advanced-custom-fields/trunk/includes/fields/class-acf-field-relationship.php#L187
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/advanced-custom-fields/trunk/includes/fields/class-acf-field-user.php#L435
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/51e3a976-a1a3-411a-b88c-f1cb2aa8d5eb?source=cve
  • nvd.nist.gov Official NVD record