CVE-2026-65051 Ninja Forms Server-Side Validation Bypass via Client-Controlled Field Metadata Merge in AJAX Submission Handler
Unauthenticated attackers can bypass Ninja Forms validation by manipulating AJAX metadata, allowing submission of unverified content and triggering form actions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-65051?
CVE-2026-65051 is a medium-severity vulnerability in Saturday Drive Ninja Forms, published on 21 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-602
Which versions are affected by CVE-2026-65051?
How do I fix CVE-2026-65051?
No fix has been published for CVE-2026-65051 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-65051 being exploited?
There is no known exploitation of CVE-2026-65051 in the wild and no public exploit code.
Sources
Also known as GHSA-q572-6pwx-4p26.