EUVD-2026-20968Published

n8n-MCP has an Authenticated SSRF via instance-URL header in multi-tenant HTTP mode

cve-program · CVE-2026-39974

Published

n8n-mcp

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "vendor": "czlonkowski",
                    "product": "n8n-mcp",
                    "versions": [
                        {
                            "version": "< 2.47.4",
                            "status": "affected"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON

euvd · EUVD-2026-20968

Published

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: Apr 9, 2026, 4:45:20 PM

dateUpdated: Apr 13, 2026, 8:09:26 PM

No normalized affected-package data is projected for this source revision. The original publisher record may contain additional product and version evidence; this does not establish that a package is unaffected.

Original source record · Cite this exact observation · Complete original publisher JSON

nvd · CVE-2026-39974

Published

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Analyzed

Weakness classifications: CWE-918

Original publisher date fields

published: 2026-04-09T17:16:30.933

lastModified: 2026-10-26T21:10:00.170

1 source CPE criteria · context only

cpe:2.3:a:n8n-mcp:n8n-mcp:*:*:*:*:*:*:*:*

The original JSON retains the logical configuration operators, exclusions and version bounds.

Original source record · Cite this exact observation · Complete original publisher JSON

osv · GHSA-4ggg-h7ph-26qr

Published

n8n-mcp

npm

SEMVER · introduced 0 → fixed 2.47.4

Original source record · Cite this exact observation · Complete original publisher JSON