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CVE-2026-34830 Rack: Rack::Sendfile regex injection via HTTP_X_ACCEL_MAPPING header allows arbitrary file reads through nginx

🗓️ 02 Apr 2026 16:47:40Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 14 Views

CVE-2026-34830: Rack::Sendfile regex injection HTTP_X_ACCEL_MAPPING enables arbitrary file reads.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-34830
2 Apr 202616:47
attackerkb
Chainguard
CVE-2026-34830 vulnerabilities
6 Apr 202601:18
cgr
CNNVD
Rack 安全漏洞
2 Apr 202600:00
cnnvd
CVE
CVE-2026-34830
2 Apr 202616:47
cve
Debian CVE
CVE-2026-34830
2 Apr 202616:47
debiancve
EUVD
EUVD-2026-18390
2 Apr 202620:35
euvd
Github Security Blog
Rack::Sendfile header-based X-Accel-Mapping regex injection enables unauthorized X-Accel-Redirect
2 Apr 202620:35
github
Mageia
Updated ruby-rack packages fix security vulnerabilities
18 Jun 202621:28
mageia
NVD
CVE-2026-34830
2 Apr 202617:16
nvd
OSV
CGA-5926-72FF-MP26
6 Apr 202600:30
osv
Rows per page
[
  {
    "vendor": "rack",
    "product": "rack",
    "versions": [
      {
        "version": "< 2.2.23",
        "status": "affected"
      },
      {
        "version": ">= 3.0.0.beta1, < 3.1.21",
        "status": "affected"
      },
      {
        "version": ">= 3.2.0, < 3.2.6",
        "status": "affected"
      }
    ]
  }
]

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02 Apr 2026 16:47Current
CVSS 3.15.9
EPSS0.00209
14