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CVE-2026-73548 Envoy: Cross-user response poisoning via a generic (non-WebSocket) HTTP upgrade on Envoy's shared backend pool

🗓️ 21 Sep 2026 19:35:15Reported by GoogleType 
osv
 osv
🔗 osv.dev👁 5 Views

Unauthenticated cross-user response poisoning in Envoy via HTTP upgrade on shared backend pool.

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25 Sep 2026 11:45Current
5.7Medium risk
Vulners AI Score5.7
CVSS 3.17.5
5