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CVE-2026-48743: Envoy Quic Headers Only Content Lengthcve-2026-48743-envoy-quic-headers-only-content-length

Envoy's HTTP/3 QUIC stream implementation fails to validate the `content-length` header for headers-only streams. This misses a check to ensure that streams marked as complete at the transport layer have a `content-length` consistent with having no body. This can lead to HTTP request smuggling or desync when proxying to HTTP/1. Ensure `updateReceivedContentB

C++CVE-2026-48743CWE-444
by Provallyupdated 2026-09-02Apache-2.0
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