CVE-2026-3838 — HIGH (8.8) — White Hats Nepal

Vulnerability Description

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.

CVSS Score

8.8

HIGH

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Unraid	Unraid	7.2.3

Related Weaknesses (CWE)

CWE-22

References

https://www.zerodayinitiative.com/advisories/ZDI-26-171/Third Party Advisory

FAQ

What is CVE-2026-3838?

CVE-2026-3838 is a vulnerability with a CVSS score of 8.8 (HIGH). 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 re...

How severe is CVE-2026-3838?

CVE-2026-3838 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-3838?

Check the references section above for vendor advisories and patch information. Affected products include: Unraid Unraid.