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CVE-2026-3635 Fastify request.protocol and request.host spoofable via X-Forwarded-Proto/Host from untrusted connections when trustProxy uses restrictive trust function

🗓️ 23 Mar 2026 13:53:00Reported by GoogleType 
osv
 osv
🔗 osv.dev👁 1 Views

CVE-2026-3635: Restrictive trustProxy allows spoofing of request.protocol and request.host via X-Forwarded headers from untrusted connections.

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08 Jul 2026 08:12Current
6Medium risk
Vulners AI Score6
CVSS 3.16.1
EPSS0.0012
1