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Rack's multipart byte range processing allows denial of service via excessive overlapping ranges

🗓️ 02 Apr 2026 19:07:28Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 3 Views

Rack get_byte_ranges accepts many overlapping ranges, enabling denial of service via CPU and I/O in file serving.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-34826
2 Apr 202616:45
attackerkb
IBM Security Bulletins
Security Bulletin: Multiple vulnerabilities in IBM Aspera Console
16 Apr 202622:21
ibm
Chainguard
CVE-2026-34826 vulnerabilities
6 Apr 202601:18
cgr
CNNVD
Rack 安全漏洞
2 Apr 202600:00
cnnvd
CVE
CVE-2026-34826
2 Apr 202616:45
cve
Cvelist
CVE-2026-34826 Rack: Unbounded Range Count in get_byte_ranges Enables DoS
2 Apr 202616:45
cvelist
Debian CVE
CVE-2026-34826
2 Apr 202616:45
debiancve
EUVD
EUVD-2026-18386
2 Apr 202619:07
euvd
NVD
CVE-2026-34826
2 Apr 202617:16
nvd
OSV
CGA-CFQ9-XV63-3XPJ
6 Apr 202600:30
osv
Rows per page
Vulners
Node
rack_projectrackRange3.2.03.2.6rubygems
OR
rack_projectrackRange3.0.0.beta13.1.21rubygems
OR
rack_projectrackRange<2.2.23rubygems

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13 May 2026 15:21Current
6.6Medium risk
Vulners AI Score6.6
CVSS 3.15.3 - 7.5
EPSS0.00021
SSVC
3