#VU124837 Permissive Regular Expression in Rack - CVE-2026-34763

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Main Vulnerability Database Vulnerabilities #VU124837

#VU124837 Permissive Regular Expression in Rack - CVE-2026-34763

Published: April 2, 2026


Vulnerability identifier: #VU124837
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-34763
CWE-ID: CWE-625
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Rack
Software vendor:
Rack

Description

The vulnerability allows a remote attacker to gain access to sensitive information on the system.

The vulnerability exists due to unescaped regex interpolation in "Rack::Directory". A remote attacker can cause Root directory disclosure on the system.


Remediation

Install updates from vendor's website.

External links