Smart Custom Fields <= 5.0.7 - Authenticated (Author+) Stored Cross-Site Scripting via Attachment Title

6.4
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE CVE-2026-2594
CVSS 6.4 (Medium)
Publicly Published July 16, 2026
Last Updated July 17, 2026
Researcher lucsob

Description

The Smart Custom Fields plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 5.0.7. This is due to insufficient input sanitization and output escaping of uploaded image attachment titles. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. NOTE: This vulnerability was partially patched in 5.0.7.

Learn more about Cross-Site Scripting vulnerabilities and how to prevent them.

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Vulnerability Details for Smart Custom Fields

Software Type Plugin
Software Slug smart-custom-fields (view on wordpress.org)
Patched? Yes
Remediation Update to version 5.0.8, or a newer patched version
Affected Version
  • <= 5.0.7
Patched Version
  • 5.0.8

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