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CVE-2026-34831

🗓️ 02 Apr 2026 16:43:08Reported by GitHub_MType 
cve
 cve
🔗 web.nvd.nist.gov👁 9 Views

Rack::Files 404 responses misreport Content-Length for UTF-8 paths, risking desynchronization; fixed in 2.2.23, 3.1.21, 3.2.6.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-34831
2 Apr 202616:43
attackerkb
Chainguard
CVE-2026-34831 vulnerabilities
6 Apr 202601:18
cgr
CNNVD
Rack 安全漏洞
2 Apr 202600:00
cnnvd
Cvelist
CVE-2026-34831 Rack: Content-Length mismatch in Rack::Files error responses
2 Apr 202616:43
cvelist
Debian CVE
CVE-2026-34831
2 Apr 202616:43
debiancve
EUVD
EUVD-2026-18392
2 Apr 202620:36
euvd
Github Security Blog
Rack has Content-Length mismatch in Rack::Files error responses
2 Apr 202620:36
github
NVD
CVE-2026-34831
2 Apr 202617:16
nvd
OSV
CGA-WHH4-HGX9-244X
6 Apr 202600:30
osv
OSV
DEBIAN-CVE-2026-34831
2 Apr 202617:16
osv
Rows per page
NVD
Vulners
Node
rackrackRange<2.2.23ruby
OR
rackrackRange3.0.03.1.21ruby
OR
rackrackRange3.2.03.2.6ruby
[
  {
    "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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16 Apr 2026 16:44Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.14.8 - 6.5
EPSS0.00043
SSVC
9