Unraid 6.8.0/7.0.0/7.0.1 Request Path path traversal

Summaryinfo

A vulnerability described as critical has been identified in Unraid. This affects an unknown part of the component Request Path Handler. Such manipulation leads to path traversal. This vulnerability is traded as CVE-2026-3838. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Unraid. Affected by this issue is an unknown code block of the component Request Path Handler. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is shared for download at zerodayinitiative.com. This vulnerability is handled as CVE-2026-3838. The exploitation is known to be easy. The attack may be launched remotely. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1006.

The vulnerability scanner Nessus provides a plugin with the ID 303451 (Unraid < 7.2.4 Multiple Vulnerabilities (ZDI-26-171 / ZDI-26-172)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 7.2.4 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (303451). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

• Unraid

Version

• 6.8.0
• 7.0.0
• 7.0.1

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Discussion