Path traversal in Unraid
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · CNA. Fix status from CNA.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-3839
- 2026-10-03 Alias added: GHSA-hv24-53jm-mrp5
- 2026-10-11 Priority changed: LOW → MEDIUM
- 2026-10-25 Priority changed: MEDIUM → LOW
References
Advisory 1
More Unraid vulnerabilities
- TI-2020-04767 Unraid through 6.8.0 allows Remote Code Execution. KEVCVSS 3.1CRITICAL 9.8
- TI-2020-04768 Unraid 6.8.0 allows authentication bypass. KEVCVSS 3.1HIGH 7.5
- TI-2026-08564 OS command injection in Unraid CVSS 3.0HIGH 8.8
- TI-2026-08563 OS command injection in Unraid CVSS 3.0HIGH 8.8
- TI-2026-03324 Path traversal in Unraid CVSS 3.0HIGH 8.8
Sources
- CVE-2026-3839 · CVE Program
- CVE-2026-3839 · NVD
- FIRST EPSS
- GHSA-hv24-53jm-mrp5 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences