PT-2026-61954 · Saturday Drive · Ninja Forms

Pavel Kohout · CVE-2026-65051 · Published 2026-07-21 · Updated 2026-07-21

Mitre

CVSS v3.1

6.5

Medium

Base vector

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

Ninja Forms WordPress plugin version 3.14.8 contains a client-side enforcement of server-side security vulnerability that allows unauthenticated attackers to bypass all form validation by merging attacker-controlled field metadata over server-loaded form definitions before validation runs. Attackers can craft a malicious AJAX submission overriding field types, removing required flags, and disabling CAPTCHA checks through the nopriv AJAX endpoint to trigger form actions such as email notifications and database storage with unverified, attacker-controlled content.

Fix

Weakness Enumeration

CWE-602

Related Identifiers

CVE-2026-65051

Affected Products

Ninja Forms

References · 4

• https://wordpress.org/plugins/ninja-forms/changelog · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-65051 · Security Note
• https://wordpress.org/plugins/ninja-forms · Note
• https://vulncheck.com/advisories/ninja-forms-server-side-validation-bypass-via-client-controlled-field-metadata-merge-in-ajax-submission-handler · Note