User Impersonation Affecting n8n-nodes-base package, versions <1.121.9>=2.0.0 <2.5.0
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Test your applications- Snyk IDSNYK-JS-N8NNODESBASE-15360948
- published27 Feb 2026
- disclosed26 Feb 2026
- creditSimon Köck
Introduced: 26 Feb 2026
New CVE NOT AVAILABLE CWE-290 (opens in a new tab)Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
Upgrade n8n-nodes-base to version 1.121.9, 2.5.0 or higher.
Overview
n8n-nodes-base is a Base nodes of n8n
Affected versions of this package are vulnerable to User Impersonation via the GitHub Webhook Trigger component. An attacker can trigger unauthorized workflow executions by sending unsigned POST requests to the webhook endpoint, thereby injecting arbitrary data into the workflow.
Workaround
This vulnerability can be mitigated by limiting workflow creation and editing permissions to fully trusted users only, and restricting network access to the webhook endpoint to known GitHub webhook IP ranges.