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CVE-2026-47220 Envoy: Segmentation fault when using %REQUESTED_SERVER_NAME% in log format

🗓️ 26 Jun 2026 18:02:17Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 4 Views

Envoy segfault using requested server name in log format when header missing; fixed in 1.37.5 and 1.38.3.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-47220
26 Jun 202618:02
attackerkb
CVE
CVE-2026-47220
26 Jun 202618:02
cve
EUVD
EUVD-2026-39829
26 Jun 202618:02
euvd
NVD
CVE-2026-47220
26 Jun 202619:16
nvd
Positive Technologies
PT-2026-52894
26 Jun 202600:00
ptsecurity
RedhatCVE
CVE-2026-47220
26 Jun 202620:04
redhatcve
[
  {
    "vendor": "envoyproxy",
    "product": "envoy",
    "versions": [
      {
        "version": ">= 1.38.0, < 1.38.3",
        "status": "affected"
      },
      {
        "version": ">= 1.37.0, < 1.37.5",
        "status": "affected"
      }
    ]
  }
]

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