#VU124835 Improper Handling of Length Parameter Inconsistency in Rack - CVE-2026-34831

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Main Vulnerability Database Vulnerabilities #VU124835

#VU124835 Improper Handling of Length Parameter Inconsistency in Rack - CVE-2026-34831

Published: April 2, 2026


Vulnerability identifier: #VU124835
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-34831
CWE-ID: CWE-130
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Rack
Software vendor:
Rack

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to "Content-Length" mismatch in "Rack::Files" error responses. A remote attacker can cause response parsing inconsistencies or response desynchronization.


Remediation

Install updates from vendor's website.

External links