Smart Custom Fields, CVE-2026-4066
- CVE, Research URL
- Home page URL
- Application
- Published on
- Mar 24, 2026
- Research Description
- 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.
- Affected versions
-
max 5.0.7.
- Status
-
vulnerable