---
id: CVE-2026-11363
title: >-
  The Ninja Forms – The Contact Form Builder That Grows With You plugin for
  WordPress is vulnerable to PHP Object Injection in all versions up to, and
  including, 3.14.6 via deserialization of untrusted input 
summary: >-
  The Ninja Forms – The Contact Form Builder That Grows With You plugin for
  WordPress is vulnerable to PHP Object Injection in all versions up to, and
  including, 3.14.6 via deserialization of untrusted input . This makes it
  possible for au…
severity: medium
cvss: 6.6
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-502
vendor: kstover
product: Ninja Forms – The Contact Form Builder That Grows With You
affected:
  - ninja_forms_the_contact_form_builder_that_grows_with_you <= 3.14.6
published: '2026-09-09'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T17:17:12.893'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-11363'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.14.2/includes/Abstracts/Model.php#L344
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.14.2/includes/Admin/Menus/ImportExport.php#L63
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.14.2/includes/Admin/Processes/ImportForm.php#L426
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.14.2/includes/Helper.php#L451
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.14.5/includes/Abstracts/Model.php#L344
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.14.5/includes/Admin/Menus/ImportExport.php#L63
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.14.5/includes/Admin/Processes/ImportForm.php#L426
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.14.5/includes/Helper.php#L451
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset?reponame=&old=3581939%40ninja-forms&new=3581939%40ninja-forms
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/d95427d0-77c6-41d6-93f1-508999e14242?source=cve
    label: security@wordfence.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-09T15:41:29.254187Z'
epss: 0.0066
epssPercentile: 0.49429
ingestedAt: '2026-09-09T03:58:58.111Z'
---

## Overview

The Ninja Forms – The Contact Form Builder That Grows With You plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 3.14.6 via deserialization of untrusted input . This makes it possible for authenticated attackers, with administrator-level access and above, to inject a PHP Object. No known POP chain is present in the vulnerable software, which means this vulnerability has no impact unless another plugin or theme containing a POP chain is installed on the site. If a POP chain is present via an additional plugin or theme installed on the target system, it may allow the attacker to perform actions like delete arbitrary files, retrieve sensitive data, or execute code depending on the POP chain present. The deserialization is triggered automatically during form import when WPN_Helper::build_nf_cache() invokes $action->get_settings() immediately after the crafted form is imported, requiring no further interaction beyond the import action itself.

## Remediation

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