CVE-2026-103247
n8n before 1.123.80 Credential Tampering via Duplicate Node IDs
CVSS Score
8.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-639 |
| Vendor | n8n-io |
| Product | n8n |
| Published | Oct 1, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
n8n-io / n8n
0 < 1.123.80
References
Credits
🔍 evgind