Server-Side Request Forgery Protection Bypass in n8n by n8n.io
CVE-2026-72768

6.4MEDIUM

Key Information:

Vendor

N8n-io

Status
N8n
Vendor
CVE Published:
11 August 2026

What is CVE-2026-72768?

n8n versions before 2.32.1 are impacted by a vulnerability in the MCP Client node that allows authenticated users to bypass server-side request forgery (SSRF) protections. This flaw enables attackers to create workflows capable of sending requests to internal or prohibited hosts while circumventing SSRF safeguards. Consequently, internal services can be exposed, and attackers may retrieve sensitive responses through the compromised workflows, posing a serious risk to data security and integrity.

Affected Version(s)

n8n 0 < 2.32.1

n8n 0 < 2.31.5

n8n 2.32.1

References

https://github.com/n8n-io/n8n/security/advisories/GHSA-vh...
vendor-advisory
https://www.vulncheck.com/advisories/n8n-before-ssrf-prot...
third-party-advisory

CVSS V4

Score:
6.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

nil340
.