CVE-2026-3838: Unraid

High severity, CVSS 8.8. EPSS: 1.4% chance of exploitation in the next 30 days.

Unraid Update Request Path Traversal Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Unraid. Authentication is required to exploit this vulnerability. The specific flaw exists within the update.php file. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-28951.

Affected products

• Unraid Unraid: version 7.2.3 only

Published 2026-03-16. Last modified 2026-06-17.