CVE-2026-1239 HIGH

CVE-2026-1239: Ninja Forms <= 3.14.1 - Missing Authorization to Unauthenticated Sensitive Information Disclosure via token/refresh REST Endpoint

Vendor Kstover
Product Ninja Forms – The Contact Form Builder That Grows With You
Weakness CWE-862 · Missing authorization
Published July 1, 2026
Last update July 1, 2026

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

What the vulnerability does

01Description

The Ninja Forms – The Contact Form Builder That Grows With You plugin for WordPress is vulnerable to unauthorized access of data due to a missing authorization check on the 'ninja-forms-views/token/refresh' REST callback in all versions up to, and including, 3.14.1. This makes it possible for unauthenticated attackers to view form submissions, which could potentially contain sensitive information.

Explanation of Vulnerability in Simple Terms

02Summary

Ninja Forms versions 3.14.1 and earlier lack proper authorization checks, allowing unauthenticated attackers to read sensitive data through the plugin. An attacker can access information without needing to log in or interact with a site administrator. This affects all installations of the vulnerable plugin version.

What an attacker can do

03Attacker Capabilities

Read sensitive data from the site without logging in.

Potential impact on your site

04Site Impact

Confidential information stored or processed by Ninja Forms may be exposed to the public internet.

Conditions required to exploit

05Prerequisites

Network access to the site; no authentication or user interaction required.

Key dates

06Disclosure timeline

July 1, 2026 CVE published
July 1, 2026 Record updated

Related vulnerabilities

08Related CVE