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CVE-2026-3839— Unraid Authentication Request Path Traversal Authentication Bypass Vulnerability

Quick assessment

Affected
Unraid Unraid
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Unraid是Unraid公司的一套主要用于个人和小型企业的操作系统。 Unraid存在路径遍历漏洞，该漏洞源于auth-request.php文件缺乏对用户提供路径的验证，可能导致路径遍历和身份验证绕过。

AI Predicted 9.8 Difficulty: Trivial EPSS 0.65% · P48

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-3839

Vulnerability Information
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Vulnerability Title
Unraid Authentication Request Path Traversal Authentication Bypass Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Unraid Authentication Request Path Traversal Authentication Bypass Vulnerability. This vulnerability allows remote attackers to bypass authentication on affected installations of Unraid. Authentication is not required to exploit this vulnerability. The specific flaw exists within the auth-request.php file. The issue results from the lack of proper validation of a user-supplied path prior to using it in authentications. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-28912.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
Unraid 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Unraid是Unraid公司的一套主要用于个人和小型企业的操作系统。 Unraid存在路径遍历漏洞，该漏洞源于auth-request.php文件缺乏对用户提供路径的验证，可能导致路径遍历和身份验证绕过。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Unraid Unraid 7.2.3 -

II. Public POCs for CVE-2026-3839

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III. Intelligence Information for CVE-2026-3839

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Vendor Advisories for CVE-2026-3839 (1)

IV. Related Vulnerabilities

Same product: Unraid
Same vendor: Unraid
Same weakness: CWE-22

V. Comments for CVE-2026-3839

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