CVE-2026-72768: n8n before 2.32.1 SSRF Protection Bypass via MCP Client

Published Aug 11, 2026
·
Updated

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.

Affected Software

1 affected component
n8n n8n<2.32.1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade n8n to a version that resolves this vulnerability.

    Fixed in 2.32.1
  2. Compensating control

    Ensure authenticated users cannot use or access the n8n MCP Client node until n8n is upgraded to 2.32.1 to prevent SSRF protection bypass.

Event History

Aug 11, 2026
CVE Published
via MITRE·12:17 PM
Data Sourced
via MITRE·12:17 PM
DescriptionWeakness
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