CVE-2026-103246
8.3
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
Summary
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 Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| n8n-io | n8n | 0 < 2.39.6 | affected |
| n8n-io | n8n | 2.40.0 < 2.40.1 | affected |
Weaknesses
- CWE-639: Authorization Bypass Through User-Controlled Key
References
- https://github.com/n8n-io/n8n/security/advisories/GHSA-9rhv-fhr8-7q5r
- https://www.vulncheck.com/advisories/n8n-before-2.39.6-and-2.40-x-before-2.40.1-credential-disclosure-via-node-tool-introspection
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