---
id: CVE-2026-72768
title: n8n before 2.32.1 SSRF Protection Bypass via MCP Client
summary: >-
  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
  inter…
severity: medium
cvss: 6.4
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/SA:L'
cvssSource: cna
cwe:
  - CWE-918
vendor: n8n-io
product: n8n
affected:
  - n8n >= 2.32.0 < 2.32.1
  - n8n < 2.31.5
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-08-11T18:02:14.835936Z'
published: '2026-08-11'
updated: '2026-10-29'
sourceUpdated: '2026-10-29T21:16:41.895Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-72768'
references:
  - url: 'https://github.com/n8n-io/n8n/security/advisories/GHSA-vhf8-cg2h-cg3p'
    label: GitHub Security Advisory (GHSA-vhf8-cg2h-cg3p)
  - url: >-
      https://www.vulncheck.com/advisories/n8n-before-ssrf-protection-bypass-via-mcp-client
    label: >-
      VulnCheck Advisory: n8n before 2.32.1 SSRF Protection Bypass via MCP
      Client
tags:
  - cve.org
epss: 0.00396
epssPercentile: 0.33973
ingestedAt: '2026-11-03T08:39:35.592Z'
---

## Overview

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

- `n8n >= 2.32.0 < 2.32.1`
- `n8n < 2.31.5`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.