---
id: CVE-2026-103247
title: >-
  n8n versions before 1.123.80 contain a credential tampering vulnerability
  where duplicate node IDs bypass the workflow credential tamper guard
summary: >-
  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 matc…
severity: high
cvss: 8.5
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H'
cwe:
  - CWE-639
vendor: n8n-io
product: n8n
affected:
  - n8n < 1.123.80
published: '2026-10-01'
updated: '2026-10-01'
sourceUpdated: '2026-10-01T11:17:18.207'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-103247'
references:
  - url: 'https://github.com/n8n-io/n8n/security/advisories/GHSA-7gjv-rcf8-x5qc'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/n8n-before-1.123.80-credential-tampering-via-duplicate-node-ids
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-01T11:42:53.798Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.