Description
n8n versions before 2.39.6 and 2.40.0 before 2.40.1 fail to validate credential ownership during inline agent node-tool introspection. Attackers can reference arbitrary credential IDs to decrypt and exfiltrate plaintext secrets to attacker-controlled hosts without ownership verification.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| n8n-io | n8n | < 2.39.6, 2.40.0 – < 2.40.1 | 2.39.6 |
Advisories 1
- WID-SEC-2026-3393 n8n: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 1, 2026