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CVE-2026-34835

🗓️ 02 Apr 2026 18:16:33Reported by [email protected]Type 
nvd
 nvd
🔗 web.nvd.nist.gov👁 1 Views

Rack host header parsing allows poisoning in certain versions; fixed in 3.1.21 and 3.2.6.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-34835
2 Apr 202617:09
attackerkb
Information Security Automation
April Linux Patch Wednesday
22 Apr 202616:00
avleonov
Chainguard
CVE-2026-34835 vulnerabilities
6 Apr 202601:18
cgr
CNNVD
Rack 安全漏洞
2 Apr 202600:00
cnnvd
CVE
CVE-2026-34835
2 Apr 202617:09
cve
Cvelist
CVE-2026-34835 Rack: `Rack::Request` accepts invalid Host characters, enabling host allowlist bypass.
2 Apr 202617:09
cvelist
Debian CVE
CVE-2026-34835
2 Apr 202617:09
debiancve
EUVD
EUVD-2026-18478
2 Apr 202620:36
euvd
Github Security Blog
Rack::Request accepts invalid Host characters, enabling host allowlist bypass
2 Apr 202620:36
github
OSV
CGA-F9QQ-57F2-FFMP
6 Apr 202600:30
osv
Rows per page
NVD
Node
rackrackRange3.0.03.1.21ruby
OR
rackrackRange3.2.03.2.6ruby

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03 Apr 2026 19:32Current
CVSS 3.14.8 - 6.5
EPSS0.00131
1