Blocks for ACF Fields <= 1.6.2 - Missing Authorization to Authenticated (Author+) Arbitrary ACF Field Value Disclosure via 'id' Parameter
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.
Betroffene Software
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| Plattform | Paket | Anfällige Versionen | Behoben in |
|---|---|---|---|
| WordPress-Plugin | Blocks for ACF Fields — Display Custom Fields in the Block Editor | <= 1.6.2 | 1.6.3 |
Verweise
- CVSS-Vektor
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N- Schwäche (CWE)
CWE-862- Plattform
- WordPress
- Paket
Blocks for ACF Fields — Display Custom Fields in the Block Editor- Veröffentlicht
- 08.07.2026
- Aktualisiert
- 11.10.2026 10:23
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Schwachstellenhistorie: Blocks for ACF Fields — Display Custom Fields in the Block Editor
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