SSRF in N8n
CVE-2026-72768
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.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L.
EPSS exploit prediction
EPSS: 0.004 (31.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 31.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.004 · change: +0.002
Affected products
- N8n — versions 2.32.0
- N8n-Io N8n — versions 0, 2.32.1, 2.31.5
Weakness classification (CWE)
References
- github.com/n8n-io/n8n/security/advisories/GHSA-vhf8-cg2h-cg3p (vendor-advisory, Mitigation, Vendor Advisory)
- www.vulncheck.com/advisories/n8n-before-ssrf-protection-bypass-via-mcp-client (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-72768?
- CVE-2026-72768 is a high-severity vulnerability in N8n, classified under Server-Side Request Forgery (SSRF). CVSS score: 8.3/10. Published 2026-08-11.
- How severe is CVE-2026-72768?
- High severity. CVSS v3 base score is 8.3 out of 10.