---
id: CVE-2026-19769
title: >-
  The Ninja Forms – The Contact Form Builder That Grows With You plugin for
  WordPress is vulnerable to Stored Cross-Site Scripting via Repeater Child
  'type' Confusion via Unmatched Array Key in all versions up to, and including,
  3.15.1 due…
summary: >-
  The Ninja Forms – The Contact Form Builder That Grows With You plugin for
  WordPress is vulnerable to Stored Cross-Site Scripting via Repeater Child
  'type' Confusion via Unmatched Array Key in all versions up to, and including,
  3.15.1 due…
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 – The Contact Form Builder That Grows With You
affected:
  - ninja_forms_the_contact_form_builder_that_grows_with_you <= 3.15.1
published: '2026-09-05'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T17:17:33.787'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-19769'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.14.11/includes/AJAX/Controllers/Submission.php#L303
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.14.11/includes/AJAX/Controllers/Submission.php#L55
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.14.11/includes/AJAX/Controllers/Submission.php#L609
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.14.11/includes/AJAX/Controllers/Submission.php#L61
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset/3674413/ninja-forms/trunk/includes/AJAX/Controllers/Submission.php
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset?old_path=%2Fninja-forms/tags/3.15.1&new_path=%2Fninja-forms/tags/3.15.2
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset?reponame=&new=3674413%40ninja-forms%2Ftags%2F3.15.2&old=3663678%40ninja-forms%2Ftags%2F3.15.1
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/2330e381-7db3-4b79-8827-818d2ea954b5?source=cve
    label: security@wordfence.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-08T16:50:20.001519Z'
epss: 0.00247
epssPercentile: 0.14149
ingestedAt: '2026-09-06T03:49:19.491Z'
---

## Overview

The Ninja Forms – The Contact Form Builder That Grows With You plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Repeater Child 'type' Confusion via Unmatched Array Key in all versions up to, and including, 3.15.1 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. Exploitation requires the Ninja Forms File Uploads add-on to be active, as the attack routes the unwhitelisted child entry through the File Uploads handler to write an attacker-supplied HTML file containing arbitrary JavaScript into any web-server-writable directory, including the site root, where it is served from the site's own origin.

## Remediation

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