CVE-2026-72768

HighCVSS 8.3/10Last modified Oct 29, 2026

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 3.1 8.3/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L

Weakness enumeration

CWE-918

Affected software

Vendor	Product	Versions
n8n-io	n8n	>= 2.32.0, < 2.32.1
n8n-io	n8n	< 2.31.5

References

https://github.com/n8n-io/n8n/security/advisories/GHSA-vhf8-cg2h-cg3pMitigation, Vendor Advisory
https://www.vulncheck.com/advisories/n8n-before-ssrf-protection-bypass-via-mcp-clientThird Party Advisory

Timeline

Published: Aug 11, 2026
Last modified: Oct 29, 2026
NVD status: Analyzed

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