---
id: CVE-2026-103252
title: >-
  n8n versions before 1.123.80, from 2.0.0 before 2.39.6, and from 2.40.0 before
  2.40.1 contain an authorization bypass vulnerability in the credential test
  endpoint that resolves project-scoped variables without validating caller
  access
summary: >-
  n8n versions before 1.123.80, from 2.0.0 before 2.39.6, and from 2.40.0 before
  2.40.1 contain an authorization bypass vulnerability in the credential test
  endpoint that resolves project-scoped variables without validating caller
  access. …
severity: high
cvss: 7.7
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N'
cwe:
  - CWE-639
vendor: n8n-io
product: n8n
affected:
  - n8n < 1.123.80
  - n8n >= 2.0.0 < 2.39.6
  - n8n >= 2.40.0 < 2.40.1
published: '2026-10-01'
updated: '2026-10-01'
sourceUpdated: '2026-10-01T11:17:19.290'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-103252'
references:
  - url: 'https://github.com/n8n-io/n8n/security/advisories/GHSA-7gvh-q9w3-wqqx'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/n8n-before-1.123.80-2.39.6-and-2.40.1-information-disclosure-via-credential-test-endpoint
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-01T11:42:53.800Z'
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-01T13:27:04.581289Z'
---

## Overview

n8n versions before 1.123.80, from 2.0.0 before 2.39.6, and from 2.40.0 before 2.40.1 contain an authorization bypass vulnerability in the credential test endpoint that resolves project-scoped variables without validating caller access. Attackers can specify an arbitrary project ID in the request body to interpolate sensitive variables into credential test requests sent to attacker-controlled hosts for exfiltration.

## Remediation

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