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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👁 19 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
attackerkb
CVE-2026-34831
2 Apr 202616:43
–attackerkb
bdu_fstec
BDU FSTEC
Rack Modular Interface Buffer Overflow
3 Jun 202600:00
–bdu_fstec
cgr
Chainguard
CVE-2026-34831 vulnerabilities
6 Apr 202601:18
–cgr
cnnvd
CNNVD
Rack 安全漏洞
2 Apr 202600:00
–cnnvd
cve
CVE
CVE-2026-34831
2 Apr 202616:43
–cve
cvelist
Cvelist
CVE-2026-34831 Rack: Content-Length mismatch in Rack::Files error responses
2 Apr 202616:43
–cvelist
debian
Debian
[SECURITY] [DLA 4706-1] ruby-rack security update
30 Jul 202618:46
–debian
debian
Debian
[SECURITY] [DSA 6492-1] ruby-rack security update
10 Sep 202620:35
–debian
debiancve
Debian CVE
CVE-2026-34831
2 Apr 202616:43
–debiancve
nessus
Tenable Nessus
Debian dla-4706 : ruby-rack - security update
30 Jul 202600:00
–nessus
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Vulners
Node
OR
rack_projectrackRange<2.2.23
rack_projectrackRange3.0.0.beta1–3.1.21
rack_projectrackRange3.2.0–3.2.6

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08 May 2026 13:28Current
6.6Medium risk
Vulners AI Score6.6
CVSS 3.14.8 - 6.5
CVSS 46.3
EPSS0.00245
SSVC
19