CVE-2026-3839
Path Traversal in Unraid auth-request.php Enables Authentication Bypass
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-2026-3839 is an authentication bypass vulnerability in Unraid. It occurs because the auth-request.php file does not properly validate a user-supplied path before using it in the authentication process. This flaw allows remote attackers to bypass authentication without needing any privileges or user interaction.
How can this vulnerability impact me? :
This vulnerability allows an attacker to bypass authentication on affected Unraid systems remotely. As a result, unauthorized users can gain access to the system without credentials, potentially leading to unauthorized access to sensitive data, system control, and further exploitation.
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 in auth-request.php has been fixed.