Authorization Bypass Through User-Controlled Key Affecting n8n package, versions <2.39.6-r0


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.27% (18th percentile)

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  • Snyk IDSNYK-MINIMOSLATEST-N8N-20811221
  • published11 Oct 2026
  • disclosed1 Oct 2026

Introduced: 1 Oct 2026

NewCVE-2026-103252  (opens in a new tab)
CWE-639  (opens in a new tab)

How to fix?

Upgrade Minimos:latest n8n to version 2.39.6-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream n8n package and not the n8n package as distributed by Minimos. See How to fix? for Minimos:latest relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1