Is CVE-2026-8382 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-8382 being exploited in the wild.

How severe is CVE-2026-8382?

Medium severity, with a CVSS score of 5.3, published 31 May 2026.

Which products and versions are affected?

WP Engine Advanced Custom Fields Up to and including 6.8.1.

Is there a fix for CVE-2026-8382?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-8382 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-8382?

Check whether you run WP Engine Advanced Custom Fields at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-8382: WP Engine Advanced Custom Fields authorization bypass in acf_form

CVE-2026-8382 · Severity: medium · CVSS 5.3 · Published 2026-05-31

Advanced Custom Fields is a popular WordPress plugin used to add custom data fields to websites. A security flaw allows unauthorized individuals to modify the title and content of existing website posts if those posts use a specific public form feature. This could lead to website defacement or the unauthorized alteration of public-facing information.

Vendors: WP Engine.

Quick answers

Is CVE-2026-8382 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-8382 being exploited in the wild.
How severe is CVE-2026-8382?: Medium severity, with a CVSS score of 5.3, published 31 May 2026.
Which products and versions are affected?: WP Engine Advanced Custom Fields Up to and including 6.8.1.
Is there a fix for CVE-2026-8382?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-8382 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-8382?: Check whether you run WP Engine Advanced Custom Fields at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The Advanced Custom Fields (ACF) plugin for WordPress suffers from a missing authorization check (CWE-862) in the acf_form() functionality. In versions up to and including 6.8.1, the plugin fails to properly validate user permissions during form submission. An unauthenticated remote attacker can exploit this by injecting '_post_title' and '_post_content' parameters into a request directed at a publicly accessible acf_form() instance. This allows the attacker to overwrite the original title and content of the associated post. A patch has been identified in the plugin's trunk repository.

Affected products

WP Engine Advanced Custom Fields (ACF) Up to and including 6.8.1

Timeline

2026-05-31: disclosed: Initial disclosure by Wordfence and NVD publication.
2026-05-31: advisory

References

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