Description
n8n is an open source workflow automation platform. Prior to 2.27.4 and 2.28.1, the AI Agents feature did not enforce the Allowed HTTP Request Domains restriction configured on credentials when an MCP tool was pointed at an arbitrary URL, allowing a member-level user with use-only access to a shared credential to send its secret to an external server they control. This issue is fixed in versions 2.27.4 and 2.28.1.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| n8n-io | n8n | >= 2.28.0, < 2.28.1, < 2.27.4 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | n8n | >= 2.28.0, < 2.28.1 | 2.28.1 | GHSA-h44j-f5r5-ph73 |
| npm | n8n | < 2.27.4 | 2.27.4 | GHSA-h44j-f5r5-ph73 |
Advisories 2
- WID-SEC-2026-2067 n8n: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jul 15, 2026
- NCSC-2026-0228 Kwetsbaarheden verholpen in n8n workflow automation platform NCSC-NL (Netherlands) · Jul 13, 2026