---
id: CVE-2026-110899
title: >-
  WordPress Ninja Forms plugin <= 3.15.5 - Cross Site Scripting (XSS)
  vulnerability
summary: >-
  Improper Neutralization of Input During Web Page Generation ('Cross-site
  Scripting') vulnerability in Kevin Stover Ninja Forms ninja-forms allows
  Stored XSS.This issue affects Ninja Forms: from n/a through 3.15.5.
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L'
cvssSource: cna
cwe:
  - CWE-79
vendor: Kevin Stover
product: ninja-forms
affected:
  - ninja-forms <= 3.15.5
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-21T10:26:24.907937Z'
published: '2026-10-21'
updated: '2026-10-21'
sourceUpdated: '2026-10-21T10:35:07.317Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-110899'
references:
  - url: >-
      https://patchstack.com/database/wordpress/plugin/ninja-forms/vulnerability/wordpress-ninja-forms-plugin-3-15-5-cross-site-scripting-xss-vulnerability?_s_id=cve
tags:
  - cve.org
ingestedAt: '2026-10-21T08:45:36.243Z'
---

## Overview

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Kevin Stover Ninja Forms ninja-forms allows Stored XSS.This issue affects Ninja Forms: from n/a through 3.15.5.

## Affected

- `ninja-forms <= 3.15.5`

## Remediation

Update the WordPress Ninja Forms plugin to the latest available version (at least 3.15.6).