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Envoy: HTTP/2 Discarded Host Header 200 GB Header-Copy OOM in Envoy

cve-program · CVE-2026-73550

Published

envoy

Vendor product

Original vendor version evidence · not evaluated as a NuGet range
{
                    "vendor": "envoyproxy",
                    "product": "envoy",
                    "versions": [
                        {
                            "version": "< 1.36.10",
                            "status": "affected"
                        },
                        {
                            "version": ">= 1.37.0, < 1.37.6",
                            "status": "affected"
                        },
                        {
                            "version": ">= 1.38.0, < 1.38.4",
                            "status": "affected"
                        },
                        {
                            "version": ">= 1.39.0, < 1.39.1",
                            "status": "affected"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON

ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 12 Nov 08:00 UTC · 274 of 275 readable · 272 fully read · documentation 469/469 current