# CVE-2026-65051: Saturday Drive Ninja Forms validation bypass in AJAX submission handler

Source: https://junglewise.ai/threats/cve-2026-65051-saturday-drive-ninja-forms-validation-bypass-in-ajax-submission  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-21. Updated: 2026-07-21  
License: CC BY 4.0 with a link back

CVE-2026-65051 · Severity: medium · CVSS 6.5 · Published 2026-07-21

Ninja Forms is a popular WordPress plugin used to create and manage website forms. A security flaw allows unauthenticated users to bypass form protections, such as CAPTCHA and required field checks, by sending specially crafted data. This could lead to an influx of spam, unauthorized database entries, or the triggering of automated email notifications with unverified content.

Technologies: [Saturday Drive Ninja Forms](https://junglewise.ai/threats/technologies/ninja-forms). Vendors: [Saturday Drive](https://junglewise.ai/threats/vendors/saturday-drive).

## Quick answers

**Is CVE-2026-65051 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-65051 being exploited in the wild.

**How severe is CVE-2026-65051?** Medium severity, with a CVSS score of 6.5, published 21 July 2026.

**Which products and versions are affected?** Saturday Drive Ninja Forms < 3.14.9.

**Is there a fix for CVE-2026-65051?** A patch was published on 2026-07-21: Fixed in version 3.14.9 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-65051 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-65051?** Check whether you run Saturday Drive Ninja Forms at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A vulnerability classified as Client-Side Enforcement of Server-Side Security (CWE-602) exists in Ninja Forms versions prior to 3.14.9. The flaw resides in the AJAX submission handler, where attacker-controlled field metadata is merged over server-loaded form definitions before validation occurs. An unauthenticated remote attacker can exploit this by crafting a malicious AJAX request to the 'nopriv' endpoint, allowing them to override field types, remove 'required' flags, and disable security features like CAPTCHA. This bypasses server-side validation, enabling the submission of unverified content to the database or triggering form-based actions like email notifications. The issue is resolved in version 3.14.9.

## Affected products

- Saturday Drive Ninja Forms < 3.14.9

## Timeline

- 2026-07-21: disclosed
- 2026-07-21: advisory
- 2026-07-21: patched: Fixed in version 3.14.9

## References

- [https://wordpress.org/plugins/ninja-forms/](https://wordpress.org/plugins/ninja-forms/)
- [https://wordpress.org/plugins/ninja-forms/changelog/](https://wordpress.org/plugins/ninja-forms/changelog/)
- [https://www.vulncheck.com/advisories/ninja-forms-server-side-validation-bypass-via-client-controlled-field-metadata-merge-in-ajax-submission-handler](https://www.vulncheck.com/advisories/ninja-forms-server-side-validation-bypass-via-client-controlled-field-metadata-merge-in-ajax-submission-handler)

## Related threats

- [Ninja Forms SQL injection in form import settings](https://junglewise.ai/threats/cve-2026-15663-ninja-forms-sql-injection-in-form-import-settings)
- [Saturday Drive Ninja Forms improper input validation in form calculations](https://junglewise.ai/threats/cve-2026-65052-saturday-drive-ninja-forms-improper-input-validation-in-form)
- [Saturday Drive Ninja Forms missing authorization in submissions-table block](https://junglewise.ai/threats/cve-2026-65050-saturday-drive-ninja-forms-missing-authorization-in-submissions)
- [Saturday Drive Ninja Forms incorrect authorization in WordPress Multisite](https://junglewise.ai/threats/cve-2026-65049-saturday-drive-ninja-forms-incorrect-authorization-in-wordpress)
- [Saturday Drive Ninja Forms stored XSS in Repeatable Fieldset](https://junglewise.ai/threats/cve-2026-65048-saturday-drive-ninja-forms-stored-xss-in-repeatable-fieldset)