CVE-2026-9772 Unraid Web Server FileUpload Command Injection Remote Code Execution Vulnerability

High 8.8 Published 24 Jun 2026 Updated 26 Jun 2026

Authenticated attackers can execute arbitrary code via command injection in the Unraid web server file upload feature.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-9772?

CVE-2026-9772 is a high-severity command injection vulnerability in Unraid, published on 24 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Unraid Web Server FileUpload Command Injection 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 FileUpload.php. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of the www-data user. Was ZDI-CAN-30116.

Weakness: CWE-78

Which versions are affected by CVE-2026-9772?

It affects 1 product.

Products include Unraid Unraid.

How do I fix CVE-2026-9772?

No fix has been published for CVE-2026-9772 yet. Limit exposure of the affected software until one is available.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2026-9772 being exploited?

There is no known exploitation of CVE-2026-9772 in the wild and no public exploit code.

Sources

Also known as GHSA-mg2m-r63r-jgvm.