CVE WatchJul 9, 2026

CVE-2026-12428

The Blocks for ACF Fields plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability check on the get_all

CVSS

6.5

Medium

EPSS

0.3%

p21

KEV

—

Exploit Today

0-100

Published: Jul 9, 2026 · Last modified: Jul 9, 2026 · CWE-862

EPSS · 30d

0.3%EPSS · 30 days0.3%

2026-07-102026-07-21

Technical description

The Blocks for ACF Fields plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability check on the get_all_values() function in the /wp-json/acf-field-blocks/v1/values REST endpoint in versions up to, and including, 1.6.2. The permission_callback only verifies the generic publish_posts capability and the handler passes a user-supplied id parameter directly to get_field_objects() without verifying that the requesting user is authorized to read the target object. This makes it possible for authenticated attackers, with Author-level access and above, to read ACF field values from arbitrary posts (including private posts, drafts, posts by other users, and other ACF-supported objects) that they should not have access to.

Official references

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