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CVE-2026-47737 Puma PROXY Protocol v1 Accepts Repeated Protocol Headers on Persistent Connections

🗓️ 14 Jul 2026 19:45:16Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 53 Views

Puma PROXY Protocol v1 on persistent connections allows IP spoofing via headers re-parsing.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-47737
14 Jul 202619:45
–attackerkb
cgr
Chainguard
CVE-2026-47737 vulnerabilities
10 Jun 202607:25
–cgr
cve
CVE
CVE-2026-47737
14 Jul 202619:45
–cve
debian
Debian
[SECURITY] [DLA 4826-1] puma security update
7 Oct 202610:36
–debian
debiancve
Debian CVE
CVE-2026-47737
14 Jul 202619:45
–debiancve
nessus
Tenable Nessus
Debian dla-4826 : puma - security update
7 Oct 202600:00
–nessus
nessus
Tenable Nessus
TencentOS Server 4: pcs (TSSA-2026:0801)
12 Aug 202600:00
–nessus
nessus
Tenable Nessus
Linux Distros Unpatched Vulnerability : CVE-2026-47737
16 Jul 202600:00
–nessus
euvd
EUVD
EUVD-2026-44427
14 Jul 202619:45
–euvd
github
Github Security Blog
Puma PROXY Protocol v1 Accepts Repeated Protocol Headers on Persistent Connections
9 Jun 202600:09
–github
Rows per page
[
  {
    "vendor": "puma",
    "product": "puma",
    "versions": [
      {
        "version": ">= 5.5.0, < 7.2.1",
        "status": "affected"
      },
      {
        "version": ">= 8.0.0, < 8.0.2",
        "status": "affected"
      }
    ]
  }
]

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