CVE-2026-3838
Path Traversal in Unraid update.php Enables Root Remote Code Execution
Publication date: 2026-03-16
Last updated on: 2026-03-17
Assigner: Zero Day Initiative
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| unraid | unraid | 7.2.3 |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| 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. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
CVE-2026-3838 is a remote code execution vulnerability found in Unraid systems. It arises from improper validation of a user-supplied path in the update.php file before performing file operations. This flaw allows an authenticated remote attacker to execute arbitrary code with root privileges on affected installations.
How can this vulnerability impact me? :
This vulnerability can have severe impacts as it allows a remote attacker, who has authentication, to execute arbitrary code with root privileges on the affected Unraid system. This means the attacker can fully control the system, potentially leading to data theft, system compromise, disruption of services, or further attacks within the network.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, you should update your Unraid installation to version 7.2.4 or later, where the issue has been fixed.