CVE-2026-103247
n8n before 1.123.80 Credential Tampering via Duplicate Node IDs
- State
- Published
- Severity
- 5.8 Medium
- Published
- Oct 1, 2026
- Updated
- Oct 1, 2026
- Reserved
- Sep 30, 2026
Description
n8n versions before 1.123.80 contain a credential tampering vulnerability where duplicate node IDs bypass the workflow credential tamper guard. Attackers with editor access to shared workflows can exploit mismatched node ID and name matching to retain victim credentials and redirect secrets to attacker-controlled hosts.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.8 Medium | CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/SA:H | VulnCheck |
| 3.1 | 8.5 High | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-639 Authorization Bypass Through User-Controlled Key
Affected Products
| Product | Versions |
|---|---|
n8nn8n-io |
|
References
- GitHub Security Advisory (GHSA-7gjv-rcf8-x5qc)vendor-advisory
- VulnCheck Advisory: n8n before 1.123.80 Credential Tampering via Duplicate Node IDsthird-party-advisory
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