Smart Custom Fields <= 5.0.6 - Missing Authorization to Authenticated (Contributor+) Sensitive Information Exposure via Relational Post Search
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 software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| WordPress plugin | Smart Custom Fields | <= 5.0.6 | 5.0.7 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N- Weakness (CWE)
CWE-862- Platform
- WordPress
- Package
Smart Custom Fields- Disclosed
- 23.03.2026
- Updated
- 11.10.2026 10:22
Sources and licenses
Wordfence Intelligence - 87f52e3a-e414-4f47-b46c-e3811e76744b - Wordfence Intelligence
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Copyright 2012-2026 Defiant Inc.
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Vulnerability history: Smart Custom Fields
All published vulnerabilities of this package (WordPress plugin), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 4
- First → latest
- 03.2024 07.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Medium 4
Disclosures per year
- 2024: 1
- 2025: 1
- 2026: 2
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Smart Custom Fields <= 5.0.6 - Missing Authorization to Authenticated (Contributor+) Sensitive Information Exposure via Relational Post Search this entry
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