PT-2026-56768 · Gamaup · Blocks For Acf Fields — Display Custom Fields In The Block Editor
Thinnawarth Mathuros
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Published
2026-07-09
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Updated
2026-07-09
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CVE-2026-12428
CVSS v3.1
6.5
Medium
| Vector | AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
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.
Fix
Missing Authorization
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Weakness Enumeration
Related Identifiers
Affected Products
Blocks For Acf Fields — Display Custom Fields In The Block Editor