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GHSA-4GGG-H7PH-26QR n8n-mcp has authenticated SSRF via instance-URL header in multi-tenant HTTP mode

🗓️ 08 Apr 2026 19:53:48Reported by GoogleType 
osv
 osv
🔗 osv.dev👁 4 Views

Authenticated server-side forgery in n8n-mcp leaks arbitrary URL responses via multi-tenant headers; upgrade to 2.47.4.

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