CVE-2026-4812 Missing authorization in Advanced Custom Fields (ACF®)
Unauthenticated attackers can disclose draft, private, or restricted post data via ACF AJAX endpoints due to missing authorization checks.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-4812?
CVE-2026-4812 is a medium-severity missing authorization vulnerability in wpengine Advanced Custom Fields (ACF®), published on 15 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The 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.
Weakness: CWE-862
Which versions are affected by CVE-2026-4812?
How do I fix CVE-2026-4812?
No fix has been published for CVE-2026-4812 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-4812 being exploited?
There is no known exploitation of CVE-2026-4812 in the wild and no public exploit code.
Sources
Also known as GHSA-24rc-w3ff-pw6w.