Exposure of Sensitive System Information to an Unauthorized Control Sphere Affecting n8n-nodes-base package, versions <2.7.0
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Test your applications- Snyk IDSNYK-JS-N8NNODESBASE-15357599
- published26 Feb 2026
- disclosed25 Feb 2026
- creditMarcoPoloPie, Nico-Posada
Introduced: 25 Feb 2026
NewCVE-2026-27494 (opens in a new tab)Common Vulnerabilities and Exposures (CVE) are common identifiers for publicly known security vulnerabilities
Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
Upgrade n8n-nodes-base to version 2.7.0 or higher.
Overview
n8n-nodes-base is a Base nodes of n8n
Affected versions of this package are vulnerable to Exposure of Sensitive System Information to an Unauthorized Control Sphere due to insufficient restrictions in the Python Code node sandbox. An attacker can access sensitive files or execute arbitrary code by escaping the sandbox environment.
Workaround
This vulnerability can be mitigated by limiting workflow creation and editing permissions to fully trusted users only, or by disabling the Code node by adding n8n-nodes-base.code to the NODES_EXCLUDE environment variable.