CVE-2026-72768

MEDIUM
MEDIUM Priority: 0.03 BB Relevance: 63/100
Published: 2026-08-11 Modified: 2026-10-29 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: None
AT: None
VC: Low
VI: None
VA: None

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.

Weakness Classification (1)

Affected Software (6)

VendorProductVersion
n8n n8n 2.31.0 – 2.31.5
n8n n8n 2.32.0
n8n-io n8n 2.32.0 < 2.32.1
n8n-io n8n 0 < 2.31.5
n8n-io n8n 2.32.0 < 2.32.1
n8n-io n8n 0 < 2.31.5

Bug Bounty Relevance

63 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

6.4 / 10.0 v4.0
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

EPSS — Exploitation Probability

0.40%
Raw Score 0.003960
Percentile 33.7%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00396
2026-10-28
0.00396

Intelligence Sources

mitre ref →
nvd ref →