Authenticated root code execution via update path traversal
Published Mar 13, 2026 · Updated Mar 13, 2026
Path traversal in Unraid OS 7.2.3 allows remote authenticated users to execute arbitrary code as root through an update request. The WebGUI's update.php handler uses a user-supplied path in file operations without rejecting traversal outside the intended directory. A valid authenticated session is required; successful exploitation runs attacker-controlled code with root privileges on the server.
Summary
What happened
Path traversal in Unraid OS 7.2.3 allows remote authenticated users to execute arbitrary code as root through an update request. The WebGUI's update.php handler uses a user-supplied path in file operations without rejecting traversal outside the intended directory. A valid authenticated session is required; successful exploitation runs attacker-controlled code with root privileges on the server.
The record
- CVE
- CVE-2026-3838
- Published
- Mar 13, 2026
- Updated
- Mar 13, 2026
- Vendor
- Lime Technology, Inc.
- Product
- Unraid OS
- Classifications
- CWE-22, T1068
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Mar 13, 2026CVE publishedPublication date reported by the CVE source.
- Mar 13, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=7.2.3
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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