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Improper Handling of Length Parameter Inconsistency

🗓️ 02 Apr 2026 18:20:35Reported by Snyk Security DatabaseType 
snyk
 snyk
🔗 security.snyk.io👁 2 Views

Rack::Files#fail improper length handling causes response desync on percent-encoded UTF-8 paths; upgrade to Rack 2.2.23, 3.1.21, or 3.2.6+.

Related
Detection
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
CVE
CVE-2026-34831
2 Apr 202616:43
cve
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
Rows per page
Vulners
Node
rack_projectrackRange<2.2.23
OR
rack_projectrackRange3.0.0.beta13.1.21
OR
rack_projectrackRange3.2.03.2.6

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08 May 2026 13:28Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.14.8 - 6.5
CVSS 46.3
EPSS0.00041
SSVC
2