XSS in Ninja Forms

CVE-2026-92438

The Ninja Forms WordPress plugin 3.15.3 does not escape submitted form field values before outputting them on the submission edit screen in the admin area, which could allow unauthenticated users to submit values through a public form that then execute in the browser of any high-privileged user who reviews the submission.

Vulnerability class: XSS (Cross-Site Scripting)

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

  • Unknown Ninja Forms

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-92438?
CVE-2026-92438 is a high-severity vulnerability in Ninja Forms, classified under Cross-site Scripting. CVSS score: 8.8/10. Published 2026-09-22.
How severe is CVE-2026-92438?
High severity. CVSS v3 base score is 8.8 out of 10.