CVE-2026-2594: INC2734 Smart Custom Fields

Medium severity, CVSS 6.4. EPSS: 0.3% chance of exploitation in the next 30 days.

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.

Affected products

• INC2734 Smart Custom Fields: up to and including 5.0.7

Published 2026-07-17. Last modified 2026-07-17.