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CVE-2026-47774 Envoy vulnerable to HTTP/2 memory exhaustion via cookie header size bypass and HPACK amplification

🗓️ 17 Jun 2026 16:58:36Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 54 Views

CVE-2026-47774: Envoy memory exhaustion in HTTP/2 caused by cookie size bypass and HPACK amplification.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
nessus
Tenable Nessus
Amazon Linux 2023 : ecs-service-connect-agent (ALAS2023-2026-1893)
22 Jun 202600:00
–nessus
nessus
Tenable Nessus
Amazon Linux 2 : ecs-service-connect-agent, --advisory ALAS2ECS-2026-126 (ALASECS-2026-126)
22 Jun 202600:00
–nessus
amazon
Amazon
Important: ecs-service-connect-agent
22 Jun 202600:00
–amazon
amazon
Amazon
Important: ecs-service-connect-agent
22 Jun 202600:00
–amazon
circl
Circl
CVE-2026-47774
5 Jun 202619:18
–circl
cve
CVE
CVE-2026-47774
17 Jun 202616:58
–cve
euvd
EUVD
EUVD-2026-37765
17 Jun 202616:58
–euvd
kitploit
Kitploit
POC-CVE-2026-49975
15 Oct 202603:28
–kitploit
mend
Mend
CVE-2026-47774
17 Jun 202616:58
–mend
nvd
NVD
CVE-2026-47774
17 Jun 202618:18
–nvd
Rows per page
[
  {
    "vendor": "envoyproxy",
    "product": "envoy",
    "versions": [
      {
        "version": "< 1.35.11",
        "status": "affected"
      },
      {
        "version": ">= 1.36.0, < 1.36.7",
        "status": "affected"
      },
      {
        "version": ">= 1.37.0, < 1.37.3",
        "status": "affected"
      },
      {
        "version": ">= 1.38.0, < 1.38.1",
        "status": "affected"
      }
    ]
  }
]

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