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Active filters (1):Package: pkg:brew/n8n-mcp

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n8n-mcp versions from 2.14.1 up to but not including 2.47.6 have unauthenticated HTTP endpoints that allow session termination and expose sensitive operational metadata. An attacker with network access could disrupt active MCP sessions and gather information without authentication. The issue is fixed in version 2.47.6 by requiring Bearer authentication on MCP session endpoints and limiting the health check endpoint to a minimal response.

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n8n-mcp versions prior to 2.50.1 have three security issues: path traversal via unvalidated workflow IDs allowing access to same-origin endpoints with the n8n API key, redirect-following SSRF through validated trigger URLs that can redirect to disallowed hosts, and telemetry data exposure where operation payloads containing sensitive values are uploaded without redaction. Exploitation requires authenticated MCP callers and configured n8n API integration. The issues are addressed in version 2.50.1.

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