ZDI-26-385: Unraid Web Server FileUpload Command Injection Remote Code Execution Vulnerability
A command injection vulnerability exists in the Unraid Web Server's FileUpload.php component, allowing authenticated remote attackers to execute arbitrary code as the www-data user. This vulnerability requires authentication and was assigned CVE-2026-9772 with a CVSS score of 8.8 by the Zero Day Initiative. The issue is due to improper validation of user-supplied input before executing a system call. The vulnerability is fixed in Unraid version 7.3.0 stable.
AI Analysis
Technical Summary
CVE-2026-9772 is a command injection vulnerability in the FileUpload.php script of Unraid Web Server. It allows remote attackers with valid authentication to execute arbitrary system commands as the www-data user due to insufficient validation of input used in system calls. The vulnerability has a high CVSS score of 8.8, indicating critical impact on confidentiality, integrity, and availability. The flaw was responsibly disclosed and fixed in Unraid 7.3.0 stable.
Potential Impact
Successful exploitation enables remote authenticated attackers to execute arbitrary code on the affected Unraid system with the privileges of the www-data user. This can lead to full compromise of the system, including data theft, modification, or service disruption.
Mitigation Recommendations
A fix is available in Unraid version 7.3.0 stable. Users should upgrade to this version or later to remediate this vulnerability. No additional mitigation steps are indicated in the vendor advisory.
ZDI-26-385: Unraid Web Server FileUpload Command Injection Remote Code Execution Vulnerability
Description
A command injection vulnerability exists in the Unraid Web Server's FileUpload.php component, allowing authenticated remote attackers to execute arbitrary code as the www-data user. This vulnerability requires authentication and was assigned CVE-2026-9772 with a CVSS score of 8.8 by the Zero Day Initiative. The issue is due to improper validation of user-supplied input before executing a system call. The vulnerability is fixed in Unraid version 7.3.0 stable.
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-9772 is a command injection vulnerability in the FileUpload.php script of Unraid Web Server. It allows remote attackers with valid authentication to execute arbitrary system commands as the www-data user due to insufficient validation of input used in system calls. The vulnerability has a high CVSS score of 8.8, indicating critical impact on confidentiality, integrity, and availability. The flaw was responsibly disclosed and fixed in Unraid 7.3.0 stable.
Potential Impact
Successful exploitation enables remote authenticated attackers to execute arbitrary code on the affected Unraid system with the privileges of the www-data user. This can lead to full compromise of the system, including data theft, modification, or service disruption.
Mitigation Recommendations
A fix is available in Unraid version 7.3.0 stable. Users should upgrade to this version or later to remediate this vulnerability. No additional mitigation steps are indicated in the vendor advisory.
Technical Details
- Article Source
- {"url":"http://www.zerodayinitiative.com/advisories/ZDI-26-385/","fetched":true,"fetchedAt":"2026-06-24T22:24:34.496Z","wordCount":177}
Threat ID: 6a3c59a14853345fc1ee95bf
Added to database: 06/24/2026, 22:26:41 UTC
Last enriched: 06/24/2026, 22:27:06 UTC
Last updated: 06/24/2026, 22:41:03 UTC
Views: 2
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