What is CVE-2026-2594?

CVE-2026-2594 is a medium-severity vulnerability in Inc2734 Smart Custom Fields, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-07-17.

How severe is CVE-2026-2594?

Medium severity. CVSS v3 base score is 6.4 out of 10.

XSS in Inc2734 Smart Custom Fields

CVE-2026-2594

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.003 (24.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.

Affected products

Inc2734 Smart Custom Fields — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2026-2594?: CVE-2026-2594 is a medium-severity vulnerability in Inc2734 Smart Custom Fields, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-07-17.
How severe is CVE-2026-2594?: Medium severity. CVSS v3 base score is 6.4 out of 10.