Path traversal in Unraid
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · CNA. Fix status from CNA.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
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-2026-3838
- 2026-10-03 Alias added: GHSA-fx8c-7359-vxr3
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-2026-03325 Path traversal in Unraid CVSS 3.0HIGH 7.3
Sources
- CVE-2026-3838 · CVE Program
- CVE-2026-3838 · NVD
- FIRST EPSS
- GHSA-fx8c-7359-vxr3 · 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