CVE-2026-72768: n8n before 2.32.1 SSRF Protection Bypass via MCP Client
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
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
n8nto a version that resolves this vulnerability.Fixed in 2.32.1 - 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
Frequently Asked Questions
What is the severity of CVE-2026-72768?
CVE-2026-72768 has a risk score of 55, indicating a moderate level of severity.
How do I fix CVE-2026-72768?
To fix CVE-2026-72768, upgrade n8n to version 2.32.1 or later.
What type of vulnerability is CVE-2026-72768?
CVE-2026-72768 is a server-side request forgery (SSRF) protection bypass vulnerability.
Who can exploit CVE-2026-72768?
CVE-2026-72768 can be exploited by authenticated users who can craft workflows in the n8n platform.
What consequences can result from CVE-2026-72768?
Exploiting CVE-2026-72768 may allow attackers to send requests to internal or restricted hosts, effectively bypassing SSRF protections.