Missing Authentication for Critical Function Affecting n8n-mcp package, versions <2.47.6
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- published12 Apr 2026
- disclosed10 Apr 2026
- credityotampe-pluto
Introduced: 10 Apr 2026
New CVE NOT AVAILABLE CWE-306 (opens in a new tab)How to fix?
Upgrade n8n-mcp to version 2.47.6 or higher.
Overview
n8n-mcp is an Integration between n8n workflow automation and Model Context Protocol (MCP)
Affected versions of this package are vulnerable to Missing Authentication for Critical Function due to missing authentication in several HTTP transport endpoints and exposure of sensitive operational metadata in the health check endpoint. An attacker can terminate active sessions and obtain information useful for further attacks by sending unauthenticated requests to the affected endpoints.
Workaround
This vulnerability can be mitigated by restricting network access to the HTTP server using firewall rules, reverse proxy IP allowlists, or a VPN, or by using stdio mode (MCP_MODE=stdio) instead of HTTP mode.