What is CVE-2026-17037?

CVE-2026-17037 is a high-severity vulnerability in Themeum Kirki – Freeform Page Builder, Website Builder & Customizer, classified under Cross-site Scripting. CVSS score: 7.2/10. Published 2026-09-11.

How severe is CVE-2026-17037?

High severity. CVSS v3 base score is 7.2 out of 10.

XSS in Themeum Kirki – Freeform Page Builder, Website Builder & Customizer

CVE-2026-17037

The Kirki – Freeform Page Builder, Website Builder & Customizer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘comment’ parameter in all versions up to, and including, 6.2.0 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Vulnerability class: XSS (Cross-Site Scripting)

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N.

Affected products

Themeum Kirki – Freeform Page Builder, Website Builder & Customizer

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2026-17037?: CVE-2026-17037 is a high-severity vulnerability in Themeum Kirki – Freeform Page Builder, Website Builder & Customizer, classified under Cross-site Scripting. CVSS score: 7.2/10. Published 2026-09-11.
How severe is CVE-2026-17037?: High severity. CVSS v3 base score is 7.2 out of 10.