The Quarterly Threat Landscape Report is out. See what attackers are targeting now.Read report
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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Acf Field Blocks Plugin | — | Update acf-field-blocks plugin to version 1.6.3, or a newer patched version | Jul 9, 2026 | Jul 8, 2026 |
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub