CVE-2026-72768

n8n versions before 2.32.1 contain a server-side request forgery protection bypass vulnerability in the MCP Client node that allows authenticated users to bypass SSRF protections. Attackers can craft workflows that send requests to internal or blocked hosts without routing through SSRF protection, exposing internal services and reading responses back through the workflow.

CVSS v3 8.3 HIGH

8.3^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/n8n-io/n8n/security/advisories/GHSA-vhf8-cg2h-cg3p	Mitigation Vendor Advisory
https://www.vulncheck.com/advisories/n8n-before-ssrf-protection-bypass-via-mcp-client	Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:n8n:n8n::::::node.js::*
	cpe:2.3:a:n8n:n8n:2.32.0:::::node.js::

History

23 Oct 2026, 19:10

Type	Values Removed	Values Added
Summary		(es) n8n versiones anteriores a 2.32.1 contienen una vulnerabilidad de omisión de protección contra falsificación de petición del lado del servidor en el nodo Cliente MCP que permite a usuarios autenticados omitir las protecciones SSRF. Los atacantes pueden crear flujos de trabajo que envían peticiones a hosts internos o bloqueados sin enrutamiento a través de la protección SSRF, exponiendo servicios internos y leyendo las respuestas de vuelta a través del flujo de trabajo.

Information

Published : 2026-08-11 13:19

Updated : 2026-10-29 20:17

NVD link : CVE-2026-72768

Mitre link : CVE-2026-72768

CVE.ORG link : CVE-2026-72768

JSON object : View

Products Affected

n8n

n8n

CWE

CWE-918

Server-Side Request Forgery (SSRF)

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