Authorization Bypass Through User-Controlled Key Affecting n8n package, versions <2.5.0


Severity

Recommended
0.0
medium
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.01% (2nd percentile)

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  • Snyk IDSNYK-JS-N8N-15838419
  • published31 Mar 2026
  • disclosed25 Mar 2026
  • creditKolega.dev

Introduced: 25 Mar 2026

NewCVE-2026-33724  (opens in a new tab)
CWE-639  (opens in a new tab)

How to fix?

Upgrade n8n to version 2.5.0 or higher.

Overview

n8n is a n8n Workflow Automation Tool

Affected versions of this package are vulnerable to Authorization Bypass Through User-Controlled Key in the Source Control feature when configured to use SSH, as the SSH command disables host key verification. An attacker can intercept repository data or inject malicious content by performing a man-in-the-middle attack between the affected instance and the remote Git server.

Workaround

This vulnerability can be mitigated by disabling the Source Control feature if not required, or by restricting network access to ensure communication with the Git server occurs only over trusted, controlled network paths.

CVSS Base Scores

version 4.0
version 3.1