CVE-2026-65014

n8n before 2.28.0 (and before 2.27.4 on the 2.27.x branch) registers the DELETE /${restEndpoint}/test-webhook/:id endpoint before authentication middleware is applied, allowing any unauthenticated network caller who knows a workflow ID to cancel that workflow's active test webhook registration. The impact is limited to disrupting in-progress test sessions; production webhooks, persistent workflow state, and stored data are not affected.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/n8n-io/n8n/security/advisories/GHSA-33q9-f52j-gc75	Mitigation Vendor Advisory
https://www.vulncheck.com/advisories/n8n-before-authentication-bypass-via-test-webhook	Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:n8n:n8n:::::community:node.js::
	cpe:2.3:a:n8n:n8n:::::enterprise:node.js::

History

24 Oct 2026, 17:10

Type	Values Removed	Values Added
Summary		(es) n8n antes de 2.28.0 (y antes de 2.27.4 en la rama 2.27.x) registra el endpoint DELETE /${restEndpoint}/test-webhook/:id antes de que se aplique el middleware de autenticación, permitiendo que cualquier llamador de red no autenticado que conozca un ID de flujo de trabajo cancele el registro activo del webhook de prueba de ese flujo de trabajo. El impacto se limita a interrumpir las sesiones de prueba en curso; los webhooks de producción, el estado persistente del flujo de trabajo y los datos almacenados no se ven afectados.

Information

Published : 2026-07-22 12:18

Updated : 2026-10-29 21:17

NVD link : CVE-2026-65014

Mitre link : CVE-2026-65014

CVE.ORG link : CVE-2026-65014

JSON object : View

Products Affected

n8n

n8n

CWE

CWE-306

Missing Authentication for Critical Function

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