Advanced Custom Fields (ACF®) <= 6.8.10 - Authenticated (Subscriber+) Sensitive Information Exposure via Relational Field Search
- ID
- WPSEC-2026-2422
- Plugin
- Advanced Custom Fields (ACF®) (advanced-custom-fields)
- Affected
- all versions before 6.8.11
- Remediation
- Update to 6.8.11 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
- Weakness
- CWE-200
- Usage
- Plugin Medium · Affected versions Medium among sites WPSec scans, 2026-11-03
- Attack surface
- Advanced Custom Fields (ACF®) on WPSec AttackSurface
- Fix released
- Published
Description
The Advanced Custom Fields (ACF®) plugin for WordPress is vulnerable to Sensitive Information Exposure via the Relationship, Post Object and Page Link field AJAX search in all versions up to, and including, 6.8.10. This is due to the search relying on WP_Query's perm=readable, which only excludes private posts, so other users' drafts, pending and scheduled posts, and attachments whose parent post the user cannot read were still returned, and to selected posts being rendered by title without a read check. This makes it possible for authenticated attackers with subscriber-level access and above, who can reach a relational field's search, to list the titles of posts they are not allowed to read.
References
- https://wpsec.com/vuln/WPSEC-2026-2422/
- https://plugins.svn.wordpress.org/advanced-custom-fields/tags/6.8.11/
- https://wordpress.org/plugins/advanced-custom-fields/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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