Advanced Custom Fields (ACF®) <= 6.7.0 - Unauthenticated Missing Authorization to Arbitrary Post/Page Disclosure via AJAX Field Query Parameters

MITRE NVD CVE.ORG JSON API Print: PDF PDF

Summary

CVECVE-2026-4812
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-15 04:17:48 UTC
Updated2026-04-22 20:23:16 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 5.3 MEDIUM from [email protected]

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

EPSS: 0.000730000 probability, percentile 0.222080000 (date 2026-04-22)

Problem Types: CWE-862 | CWE-862 CWE-862 Missing Authorization

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
3.1CNADECLARED5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Wpengine Advanced Custom Fields ACF affected 6.7.0 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/browser/advanced-custom-fields/trunk/includes/fields/class-ac... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/advanced-custom-fields/tags/6.7.0/includes/fields/cla... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/advanced-custom-fields/trunk/includes/fields/class-ac... [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/51e3a976-a1a3-411a-b88c-f1cb2... [email protected] www.wordfence.com
plugins.trac.wordpress.org/browser/advanced-custom-fields/tags/6.7.0/includes/fields/cla... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/advanced-custom-fields/trunk/includes/fields/class-ac... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/advanced-custom-fields/trunk/includes/fields/class-ac... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/advanced-custom-fields/trunk/includes/fields/class-ac... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/advanced-custom-fields/trunk/includes/fields/class-ac... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/advanced-custom-fields/trunk/includes/fields/class-ac... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/advanced-custom-fields/tags/6.7.0/includes/fields/cla... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/advanced-custom-fields/tags/6.7.0/includes/fields/cla... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/advanced-custom-fields/trunk/includes/fields/class-ac... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/advanced-custom-fields/tags/6.7.0/includes/fields/cla... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/advanced-custom-fields/tags/6.7.0/includes/fields/cla... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/advanced-custom-fields/tags/6.7.0/includes/fields/cla... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/advanced-custom-fields/tags/6.7.0/includes/fields/cla... [email protected] plugins.trac.wordpress.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Fernando Mecozzi (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-04-14T12:58:08.000ZDisclosed
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