CVE-2026-65051

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.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://wordpress.org/plugins/ninja-forms/
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

Configurations

No configuration.

History

24 Oct 2026, 20:10

Type	Values Removed	Values Added
Summary		(es) El plugin de WordPress Ninja Forms versión 3.14.8 contiene una vulnerabilidad de seguridad de aplicación del lado del cliente en la seguridad del lado del servidor que permite a atacantes no autenticados eludir toda la validación del formulario fusionando metadatos de campo controlados por el atacante sobre las definiciones de formulario cargadas por el servidor antes de que se ejecute la validación. Los atacantes pueden elaborar una solicitud AJAX maliciosa sobrescribiendo tipos de campo, eliminando indicadores de obligatoriedad y deshabilitando las comprobaciones CAPTCHA a través del endpoint AJAX nopriv para activar acciones del formulario como notificaciones por correo electrónico y almacenamiento en la base de datos con contenido no verificado y controlado por el atacante.

Information

Published : 2026-07-21 15:16

Updated : 2026-10-24 20:10

NVD link : CVE-2026-65051

Mitre link : CVE-2026-65051

CVE.ORG link : CVE-2026-65051

JSON object : View

Products Affected

No product.

CWE

CWE-602

Client-Side Enforcement of Server-Side Security

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