Path traversal in Unraid - CVE-2026-3838
Published: March 13, 2026
Vulnerability identifier: #VU123991
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-3838
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
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 update.php file. A remote user can send a specially crafted HTTP request and upload arbitrary files on the system, leading to arbitrary code execution.
Affected software
Unraid
How to mitigate CVE-2026-3838
Install updates from vendor's website.
Unraid - update to 7.2.4