#VU123994 Path traversal in Unraid - CVE-2026-3839
Published: March 13, 2026
Vulnerability identifier: #VU123994
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-3839
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Unraid
Unraid
Software vendor:
Unraid
Unraid
Description
The vulnerability allows a remote attacker to perform directory traversal attacks.
The vulnerability exists due to input validation error when processing directory traversal sequences within the auth-request.php file. A remote attacker can send a specially crafted HTTP request and read arbitrary files on the system, leading to authentication bypass.
Remediation
Install updates from vendor's website.