N8n-mcp vulnerabilities

Products

• N8n-mcp 9

Newest

• czlonkowski n8n-mcp n8n-MCP: Incorrect authorization can expose default-scope workflow version backups in multi-tenant HTTP mode CVE-2026-55608 Fix available 4.2 MediumJuly 14, 2026
• czlonkowski n8n-mcp n8n-MCP: Cross-tenant access to workflow version backups in multi-tenant HTTP deployments CVE-2026-54052 Fix available 9.9 CriticalJuly 14, 2026
• czlonkowski n8n-mcp n8n-MCP: Multi-tenant MCP requests fall back to process-level n8n credentials when tenant headers are absent or incomplete CVE-2026-45707 Fix available 8.1 HighMay 18, 2026
• czlonkowski n8n-mcp n8n-MCP: Workflow telemetry sanitizer could retain partial values from URL-shaped node parameters CVE-2026-45582 Fix available 6.5 MediumMay 18, 2026
• czlonkowski n8n-mcp n8n-MCP: Authenticated SSRF in n8n-mcp webhook and API client paths CVE-2026-44694 Fix available 7.2 HighMay 8, 2026
• czlonkowski n8n-mcp n8n-MCP: IPv4-mapped IPv6 addresses bypass SSRF protection in validateUrlSync(), enabling full SSRF for SDK embedders CVE-2026-42449 Fix available 8.5 HighApril 30, 2026
• czlonkowski n8n-mcp n8n-MCP: Sensitive MCP tool-call arguments logged on authenticated requests in HTTP mode CVE-2026-42282 Fix available 4.3 MediumApril 25, 2026
• czlonkowski n8n-mcp n8n-MCP Logs Sensitive Request Data on Unauthorized /mcp Requests CVE-2026-41495 Fix available 5.3 MediumApril 23, 2026
• czlonkowski n8n-mcp n8n-MCP has an Authenticated SSRF via instance-URL header in multi-tenant HTTP mode CVE-2026-39974 Fix available 8.5 HighApril 8, 2026