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CVE-2026-73550

🗓️ 21 Sep 2026 19:49:28Reported by GitHub_MType 
cve
 cve
🔗 web.nvd.nist.gov👁 68 Views

Unauthenticated DoS in Envoy before 1.36.10 via HTTP/2 discarded Host header copy causing OOM.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
nessus
Tenable Nessus
Amazon Linux 2023 : ecs-service-connect-agent (ALAS2023-2026-2149)
14 Sep 202600:00
–nessus
nessus
Tenable Nessus
Amazon Linux 2 : ecs-service-connect-agent (ALASECS-2026-137)
14 Sep 202600:00
–nessus
amazon
Amazon
Important: ecs-service-connect-agent
14 Sep 202600:00
–amazon
amazon
Amazon
Important: ecs-service-connect-agent
14 Sep 202600:00
–amazon
circl
Circl
CVE-2026-73550
21 Sep 202621:03
–circl
cvelist
Cvelist
CVE-2026-73550 Envoy: HTTP/2 Discarded Host Header 200 GB Header-Copy OOM in Envoy
21 Sep 202619:49
–cvelist
euvd
EUVD
EUVD-2026-84111
21 Sep 202619:49
–euvd
mend
Mend
CVE-2026-73550
21 Sep 202619:49
–mend
nvd
NVD
CVE-2026-73550
21 Sep 202620:17
–nvd
opensuse
OPENSUSE Linux
istioctl-1.30.4-1.1 on GA media (moderate)
31 Aug 202600:00
–opensuse
Rows per page
NVD
Vulners
Node
OR
envoyproxyenvoyRange<1.36.10
envoyproxyenvoyRange1.37.0–1.37.6
envoyproxyenvoyRange1.38.0–1.38.4
envoyproxyenvoyRange1.39.0–1.39.1
[
  {
    "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"
      }
    ]
  }
]

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05 Oct 2026 14:07Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.17.5
EPSS0.00552
SSVC
68