CVE-2026-72768CWE-918ssrf

CVE-2026-72768

High · published August 11, 2026

CVSS v3.1
8.3
EPSS
0%
Percentile
32.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.3 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
CVSS v4.0
Not supplied
EPSS
0.00396 · 32.6th percentile
Weakness
CWE-918 · Server-Side Request Forgery (SSRF)
Published
2026-08-11T17:19Z
Affected products (2)
ProductVersionsFixed in
n8n/n8n≥ 2.31.0, < 2.31.52.31.5
n8n/n8nall versions—
References (2)
https://github.com/n8n-io/n8n/security/advisories/GHSA-vhf8-cg2h-cg3p · [email protected]https://www.vulncheck.com/advisories/n8n-before-ssrf-protection-bypass-via-mcp-client · [email protected]
EPSS history
Timeline
  • 11 AUG 12:17Z
    n8n before 2.32.1 SSRF Protection Bypass via MCP Client
    cvelistv5