---
id: CVE-2026-90438
title: >-
  The Ninja Forms – The Contact Form Builder That Grows With You plugin for
  WordPress is vulnerable to Stored Cross-Site Scripting via Paragraph Text
  (RTE) Field Submission in all versions up to, and including, 3.15.4 due to
  insufficient i…
summary: >-
  The Ninja Forms – The Contact Form Builder That Grows With You plugin for
  WordPress is vulnerable to Stored Cross-Site Scripting via Paragraph Text
  (RTE) Field Submission in all versions up to, and including, 3.15.4 due to
  insufficient i…
severity: high
cvss: 7.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
vendor: kstover
product: >-
  Ninja Forms – Contact Form Builder with Calculators, Quizzes, Signatures & AI
  Form Builder
affected:
  - >-
    ninja_forms_contact_form_builder_with_calculators_quizzes_signatures_ai_form_builder
    <= 3.15.4
published: '2026-10-02'
updated: '2026-10-02'
sourceUpdated: '2026-10-02T13:18:55.613'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90438'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.2/build/submissions.js#L1
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.2/includes/AJAX/Controllers/Submission.php#L61
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.2/includes/Database/Models/Submission.php#L308
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.2/includes/Helper.php#L261
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.3/build/submissions.js#L1
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.3/includes/AJAX/Controllers/Submission.php#L61
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.3/includes/Database/Models/Submission.php#L308
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.3/includes/Helper.php#L261
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset/3717122/ninja-forms/trunk/includes/AJAX/Controllers/Submission.php
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset?reponame=&new=3717122%40ninja-forms%2Ftags%2F3.15.5&old=3705719%40ninja-forms%2Ftags%2F3.15.4
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/a159485d-ce5b-46e7-8e63-a72012ccc180?source=cve
    label: security@wordfence.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-02T06:11:20.488Z'
epss: 0.00292
epssPercentile: 0.19789
---

## Overview

The Ninja Forms – The Contact Form Builder That Grows With You plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Paragraph Text (RTE) Field Submission in all versions up to, and including, 3.15.4 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. This is only exploitable when the targeted Paragraph Text field has the Rich Text Editor (RTE) option enabled.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.