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CVE-2026-48743

🗓️ 26 Jun 2026 17:34:22Reported by GitHub_MType 
cve
 cve
🔗 web.nvd.nist.gov👁 9 Views

Envoy before 1.38.1 can smuggle HTTP/3 to HTTP/1 requests via nonzero Content-Length headers-only.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-48743
26 Jun 202617:34
attackerkb
Cvelist
CVE-2026-48743 Envoy: HTTP/3 to HTTP/1 request smuggling via headers-only request with nonzero Content-Length
26 Jun 202617:34
cvelist
EUVD
EUVD-2026-39822
26 Jun 202617:34
euvd
NVD
CVE-2026-48743
26 Jun 202618:17
nvd
Positive Technologies
PT-2026-51818
24 Jun 202600:00
ptsecurity
Vulners
Node
envoyproxyenvoyRange1.38.01.38.1
OR
envoyproxyenvoyRange1.37.01.37.3
OR
envoyproxyenvoyRange1.36.01.36.7
OR
envoyproxyenvoyRange1.35.01.35.11
[
  {
    "vendor": "envoyproxy",
    "product": "envoy",
    "versions": [
      {
        "version": ">= 1.38.0, < 1.38.1",
        "status": "affected"
      },
      {
        "version": ">= 1.37.0, < 1.37.3",
        "status": "affected"
      },
      {
        "version": ">= 1.36.0, < 1.36.7",
        "status": "affected"
      },
      {
        "version": ">= 1.35.0, < 1.35.11",
        "status": "affected"
      }
    ]
  }
]

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