The vulnerability of the Ruby-based Rack web server’s modular interface, related to improper handling of parameter length discrepancies, allows attackers to compromise the confidentiality and integrity of protected information.
🗓️ 03 Jun 2026 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec🔗 bdu.fstec.ru👁 8 Views
| Reporter | Title | Published | Views | Family All 74 |
|---|---|---|---|---|
 | CVE-2026-34831 | 2 Apr 202616:43 | – | attackerkb |
 | CVE-2026-34831 vulnerabilities | 6 Apr 202601:18 | – | cgr |
 | Rack 安全漏洞 | 2 Apr 202600:00 | – | cnnvd |
 | CVE-2026-34831 | 2 Apr 202616:43 | – | cve |
 | CVE-2026-34831 Rack: Content-Length mismatch in Rack::Files error responses | 2 Apr 202616:43 | – | cvelist |
 | [SECURITY] [DLA 4706-1] ruby-rack security update | 30 Jul 202618:46 | – | debian |
 | CVE-2026-34831 | 2 Apr 202616:43 | – | debiancve |
 | Debian dla-4706 : ruby-rack - security update | 30 Jul 202600:00 | – | nessus |
| Ruby Rack < 2.2.23 / 3.0.x < 3.1.21 / 3.2 < 3.2.6 Multiple Vulnerabilities | 10 Apr 202600:00 | – | nessus |
| SUSE SLES15 Security Update : rmt-server (SUSE-SU-2026:1745-1) | 10 May 202600:00 | – | nessus |
10
Node
Data
Build on a solid foundation with Vulners data
We provide the essential building blocks for cybersecurity solutions with comprehensive, structured, and constantly updated vulnerability and exploits data
Api
Power your application with Vulners API
The Vulners REST API offers reliable, high-performance access to vulnerability intelligence, with 99.9% SLA uptime and CDN-backed data delivery for seamless global access
App
Assess and manage vulnerabilities with Vulners tools
Built on top of Vulners' database and SDK, end-user solutions give security professionals and developers lightweight and powerful tools for vulnerability remediation
19 Jun 2026 00:00Current
5.8Medium risk
Vulners AI Score5.8
CVSS 26.4
CVSS 36.5
EPSS0.00147