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CVE-2026-8382

Advanced Custom Fields (ACF®) <= 6.8.1 - Unauthenticated Arbitrary Post Modification via Front-End Form '_post_title' and '_post_content' Parameters

Published: May 31, 2026Updated: May 31, 2026 Sources: CVE List NVD
NVD MITRE
5.3CVSS
MEDIUM

The Advanced Custom Fields (ACF®) plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 6.8.1. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to overwrite the post_title and post_content of any post bound to a publicly accessible acf_form() instance by injecting values into the _post_title and _post_content parameters of a form submission request.

EPSS Score
N/A
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:LIntegrity
Low
A:NAvailability
None

Weaknesses

CWE-862

Affected Products

Advanced Custom Fields (ACF®)
wpengine

Attack Graph

Products CVE Techniques Tactics

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Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

2 techniques
Initial Access
View detailed technique mapping

References

https://www.wordfence.com/threat-intel/vulnerabilities/id/ddb2290d-d4bd-4f70-9fe9-927f49721811?source=cve
wordfence.com
https://plugins.trac.wordpress.org/browser/advanced-custom-fields/tags/6.8.0/includes/forms/form-front.php#L243
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/changeset/3549586/advanced-custom-fields/trunk/includes/forms/form-front.php
plugins.trac.wordpress.org

Timeline

Published
May 31, 2026
Last Updated
May 31, 2026

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