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CVE-2026-72768 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:8.3 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/n8n-io/n8n/security/advisories/GHSA-vhf8-cg2h-cg3p	[email protected]	MitigationVendor Advisory
https://www.vulncheck.com/advisories/n8n-before-ssrf-protection-bypass-via-mcp-client	[email protected]	Third Party Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-918	Server-Side Request Forgery (SSRF)	[email protected]

Affected Products

Product	Versions
n8n n8n	>= 2.31.0, < 2.31.5 2.32.0
CPE cpe:2.3:a:n8n:n8n::::::node.js::* cpe:2.3:a:n8n:n8n:2.32.0:::::node.js:: Remediation No remediation found in references.

Change History

4 change records found show changes

Date	Action	Recorded By
Sep 1, 2026	Reanalysis	[email protected]
Sep 1, 2026	Initial Analysis	[email protected]
Aug 11, 2026	CVE Modified	CISA-ADP
Aug 11, 2026	New CVE Received	[email protected]