CVE-2026-4066
MEDIUM
4,3
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: low
User Interaction: none
Scope: unchanged
Confidentiality: low
Integrity: none
Availability: none
Description
AI Translation Available
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.
862
Missing Authorization
IncompleteCommon Consequences
Security Scopes Affected:
Confidentiality
Integrity
Access Control
Availability
Potential Impacts:
Read Application Data
Read Files Or Directories
Modify Application Data
Modify Files Or Directories
Gain Privileges Or Assume Identity
Bypass Protection Mechanism
Dos: Crash, Exit, Or Restart
Dos: Resource Consumption (Cpu)
Dos: Resource Consumption (Memory)
Dos: Resource Consumption (Other)
Applicable Platforms
Technologies:
AI/ML, Database Server, Not Technology-Specific, Web Server
https://plugins.trac.wordpress.org/browser/smart-custom-fields/trunk/classes/fi…
https://plugins.trac.wordpress.org/browser/smart-custom-fields/trunk/classes/fi…
https://plugins.trac.wordpress.org/browser/smart-custom-fields/trunk/classes/fi…
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&ne…
https://www.wordfence.com/threat-intel/vulnerabilities/id/87f52e3a-e414-4f47-b4…