Vulnerability · Published Aug 11, 2026 · Assigned by VulnCheck

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

Medium 6.4

In plain English

A medium-severity server-side request forgery in n8n from n8n-io. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 34% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)6.4Medium

Exploit odds (30 days)0.4%top 66.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	n8n	2.32.1	GHSA-vhf8-cg2h-cg3p
npm	n8n	2.31.5	GHSA-vhf8-cg2h-cg3p

Affected products (as reported)

Vendor	Product	Versions
n8n-io	n8n	2.32.0 – before 2.32.1
n8n-io	n8n	0 – before 2.31.5

Weakness: CWE-918 · 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

References

GitHub Security Advisory (GHSA-vhf8-cg2h-cg3p) vendor-advisory
VulnCheck Advisory: n8n before 2.32.1 SSRF Protection Bypass via MCP Client third-party-advisory