CVE-2026-81344: ACF Frontend Admin PHP object injection in deserialization

CVE-2026-81344 · Severity: info · Published 2026-10-17

The ACF Frontend Admin plugin for WordPress improperly deserializes user-supplied data without validation, allowing administrators to inject malicious PHP objects. If a suitable exploitation chain exists in other installed plugins or WordPress core, an attacker with admin privileges could execute arbitrary code on the web server.

Vendors: DynamiApps.

Quick answers

Is CVE-2026-81344 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-81344 being exploited in the wild.
How severe is CVE-2026-81344?
Informational severity, published 17 October 2026.
Which products and versions are affected?
DynamiApps ACF Frontend Admin through 3.29.13.
Is there a fix for CVE-2026-81344?
Yes: fixed in 3.30.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-81344 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2026-81344?
Check whether you run DynamiApps ACF Frontend Admin 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.

How to fix

  • Fixed in: 3.30.0

Technical details

The plugin deserializes stored post content without restricting which PHP classes may be instantiated, enabling an authenticated admin user to craft a malicious serialized object. When the post content is rendered on public pages, the injected object can trigger a PHP Object Deserialization vulnerability (CWE-502). Successful exploitation requires a suitable Property-Oriented Programming (POP) chain to exist in another installed plugin or WordPress core to achieve remote code execution.

Affected products

  • DynamiApps ACF Frontend Admin through 3.29.13

Timeline

  • 2026-10-15: disclosed
  • 2026-10-17: advisory

References

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