Skip to contentCzlonkowski N8n-mcp vulnerabilities
- czlonkowski n8n-mcpn8n-MCP: Incorrect authorization can expose default-scope workflow version backups in multi-tenant HTTP modeCVE-2026-55608Fix available4.2 Medium
- czlonkowski n8n-mcpn8n-MCP: Cross-tenant access to workflow version backups in multi-tenant HTTP deploymentsCVE-2026-54052Fix available9.9 Critical
- czlonkowski n8n-mcpn8n-MCP: Multi-tenant MCP requests fall back to process-level n8n credentials when tenant headers are absent or incompleteCVE-2026-45707Fix available8.1 High
- czlonkowski n8n-mcpn8n-MCP: Workflow telemetry sanitizer could retain partial values from URL-shaped node parametersCVE-2026-45582Fix available6.5 Medium
- czlonkowski n8n-mcpn8n-MCP: Authenticated SSRF in n8n-mcp webhook and API client pathsCVE-2026-44694Fix available7.2 High
- czlonkowski n8n-mcpn8n-MCP: IPv4-mapped IPv6 addresses bypass SSRF protection in validateUrlSync(), enabling full SSRF for SDK embeddersCVE-2026-42449Fix available8.5 High
- czlonkowski n8n-mcpn8n-MCP: Sensitive MCP tool-call arguments logged on authenticated requests in HTTP modeCVE-2026-42282Fix available4.3 Medium
- czlonkowski n8n-mcpn8n-MCP Logs Sensitive Request Data on Unauthorized /mcp RequestsCVE-2026-41495Fix available5.3 Medium
- czlonkowski n8n-mcpn8n-MCP has an Authenticated SSRF via instance-URL header in multi-tenant HTTP modeCVE-2026-39974Fix available8.5 High