CVE-2026-8382
Deferred Deferred - Pending Action

Authorization Bypass in Advanced Custom Fields WordPress Plugin

Publication date: 2026-05-31

Last updated on: 2026-05-31

Assigner: Wordfence

Description
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.

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Meta Information

Published
2026-05-31
Last Modified
2026-05-31
Generated
2026-07-10
AI Q&A
2026-05-31
EPSS Evaluated
2026-07-09
NVD
CVE-2026-8382
EUVD
EUVD-2026-33483

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
advanced_custom_fields acf to 6.8.1 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-862 The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

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Executive Summary

The Advanced Custom Fields (ACF®) plugin for WordPress has an authorization bypass vulnerability in all versions up to and including 6.8.1. This means the plugin does not properly verify if a user is authorized to perform certain actions.

As a result, unauthenticated attackers can overwrite the post_title and post_content of any post that is linked to a publicly accessible acf_form() instance by injecting values into the _post_title and _post_content parameters during a form submission.

Impact Analysis

This vulnerability allows attackers who are not logged in to modify the title and content of posts on a WordPress site using the ACF plugin.

Such unauthorized modifications can lead to content tampering, misinformation, defacement, or other integrity issues on the affected website.

The CVSS score of 5.3 indicates a medium severity impact focused on integrity, with no impact on confidentiality or availability.

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