CVE-2026-3838: high-severity vulnerability in Unraid
Unraid Update Request Path Traversal Remote Code Execution Vulnerability
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.8epss 1.0%
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.
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Unraid · UnraidRelated CVEs — Unraid
In the same product, most dangerous first.
CVE-2026-9773HIGHUnraid Web Server ToggleState Command Injection Remote Code Execution VulnerabilityEPSS 1.9%CVE-2026-9772HIGHUnraid Web Server FileUpload Command Injection Remote Code Execution VulnerabilityEPSS 1.9%CVE-2026-3839HIGHUnraid Authentication Request Path Traversal Authentication Bypass VulnerabilityEPSS 0.8%CVE-2025-29266CRITICALCVE-2025-29266EPSS 0.4%