The Smart Custom Fields plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability check on the relational_posts_search() function in all versions up to, and including, 5.0.6. This makes it possible for authenticated attackers, with Contributor-level access and above, to read private and draft post content from other authors via the smart-cf-relational-posts-search AJAX action. The function queries posts with post_status=any and returns full WP_Post objects including post_content, but only checks the generic edit_posts capability instead of verifying whether the requesting user has permission to read each individual post.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Smart Custom Fields Plugin | — | Update smart-custom-fields plugin to version 5.0.7, or a newer patched version | Apr 30, 2026 | Mar 23, 2026 |
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