What is CVE-2026-80437?

CVE-2026-80437 is a medium-severity vulnerability in Ninja Forms, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 4.8/10. Published 2026-09-06.

How severe is CVE-2026-80437?

Medium severity. CVSS v3 base score is 4.8 out of 10.

Vulnerability in Ninja Forms

CVE-2026-80437

The Ninja Forms WordPress plugin from 3.14.10 before 3.15.2 does not prevent shortcodes in request-derived values from being executed when it substitutes them into content it later processes for shortcodes, allowing unauthenticated users to run any shortcode registered on the site.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N.

Affected products

Unknown Ninja Forms

Weakness classification (CWE)

CWE-74 — Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection)

References

contact@wpscan.com (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-80437?: CVE-2026-80437 is a medium-severity vulnerability in Ninja Forms, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 4.8/10. Published 2026-09-06.
How severe is CVE-2026-80437?: Medium severity. CVSS v3 base score is 4.8 out of 10.