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CVE-2026-47207 Envoy crashes if multiple unexpected ext_proc responses are packed into one gRPC message

🗓️ 26 Jun 2026 17:52:27Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 3 Views

Envoy crashes when an ext_proc gRPC message packs multiple responses, causing use-after-free; fixed in patched releases.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-47207
26 Jun 202617:52
attackerkb
CVE
CVE-2026-47207
26 Jun 202617:52
cve
EUVD
EUVD-2026-39826
26 Jun 202617:52
euvd
NVD
CVE-2026-47207
26 Jun 202618:16
nvd
Positive Technologies
PT-2026-52883
26 Jun 202600:00
ptsecurity
Vulnrichment
CVE-2026-47207 Envoy crashes if multiple unexpected ext_proc responses are packed into one gRPC message
26 Jun 202617:52
vulnrichment
[
  {
    "vendor": "envoyproxy",
    "product": "envoy",
    "versions": [
      {
        "version": ">= 1.38.0, < 1.38.3",
        "status": "affected"
      },
      {
        "version": ">= 1.37.0, < 1.37.5",
        "status": "affected"
      },
      {
        "version": ">= 1.36.0, < 1.36.9",
        "status": "affected"
      },
      {
        "version": ">= 1.34.0, < 1.35.13",
        "status": "affected"
      }
    ]
  }
]

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