#VU124828 Permissive Regular Expression in Rack - CVE-2026-34830

CSH
CYBERSECURITY HELP
Sign In REGISTER
 
Main Vulnerability Database Vulnerabilities #VU124828

#VU124828 Permissive Regular Expression in Rack - CVE-2026-34830

Published: April 2, 2026


Vulnerability identifier: #VU124828
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-34830
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 permissive regular expression in "Rack::Sendfile#map_accel_path". A remote attacker can cause nginx to serve unintended files from configured internal locations.


Remediation

Install updates from vendor's website.

External links