HOME VULNERABILITIESCVE-2026-4812

MEDIUM

CVE-2026-4812

CWE-862Published: April 15, 2026· Updated: Apr 15, 2026

5.3

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:11.3th

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.

Technical Analysis

CVE-2026-4812 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected Vendors & Products

Mentioned vendors (from description):

WordPress

CPE data not yet available in NVD for this CVE.

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

All References (17)

→

https://plugins.trac.wordpress.org/browser/advanced-custom-fields/tags/6.7.0/includes/fields/class-acf-field-page_link.php#L144

→

https://plugins.trac.wordpress.org/browser/advanced-custom-fields/tags/6.7.0/includes/fields/class-acf-field-post_object.php#L155

→

https://plugins.trac.wordpress.org/browser/advanced-custom-fields/tags/6.7.0/includes/fields/class-acf-field-post_object.php#L92

→

https://plugins.trac.wordpress.org/browser/advanced-custom-fields/tags/6.7.0/includes/fields/class-acf-field-relationship.php#L118

→

https://plugins.trac.wordpress.org/browser/advanced-custom-fields/tags/6.7.0/includes/fields/class-acf-field-relationship.php#L171

→

https://plugins.trac.wordpress.org/browser/advanced-custom-fields/tags/6.7.0/includes/fields/class-acf-field-relationship.php#L180

→

https://plugins.trac.wordpress.org/browser/advanced-custom-fields/tags/6.7.0/includes/fields/class-acf-field-relationship.php#L187

→

https://plugins.trac.wordpress.org/browser/advanced-custom-fields/tags/6.7.0/includes/fields/class-acf-field-user.php#L435

→

https://plugins.trac.wordpress.org/browser/advanced-custom-fields/trunk/includes/fields/class-acf-field-page_link.php#L144

→

https://plugins.trac.wordpress.org/browser/advanced-custom-fields/trunk/includes/fields/class-acf-field-post_object.php#L155

→

https://plugins.trac.wordpress.org/browser/advanced-custom-fields/trunk/includes/fields/class-acf-field-post_object.php#L92

→

https://plugins.trac.wordpress.org/browser/advanced-custom-fields/trunk/includes/fields/class-acf-field-relationship.php#L118

→

https://plugins.trac.wordpress.org/browser/advanced-custom-fields/trunk/includes/fields/class-acf-field-relationship.php#L171

→

https://plugins.trac.wordpress.org/browser/advanced-custom-fields/trunk/includes/fields/class-acf-field-relationship.php#L180

→

https://plugins.trac.wordpress.org/browser/advanced-custom-fields/trunk/includes/fields/class-acf-field-relationship.php#L187

Quick Facts

CVE IDCVE-2026-4812

CVSS Score5.3 / 10

SeverityMEDIUM

WeaknessCWE-862

CISA KEVNo

EPSS (30d)0.04%

PublishedApr 15, 2026

Related CVEs (CWE-862)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2026-4812 in threat intel feeds
→Review IDS/IPS signatures for exploitation attempts

Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.

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