CVE-2026-4812

MEDIUM EPSS 45.4%
Published Apr 15, 20262mo ago · Modified Jun 17, 20261w ago
5.3 CVSS 3.1
Medium
Find Similar
Published Apr 15, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
5.3
Exploitability
3.9
Impact
1.4
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity None
Availability None

Threat Intelligence

EPSS Exploit Probability
45.4% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-862 Missing Authorization Authorization

References 17

  • 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
  • wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/51e3a976-a1a3-411a-b88c-f1cb2aa8d5eb?source=cve

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.