LXC Incus up to 7.2.x Storage Volume Configuration block.create_options argument injection

Summaryinfo

A vulnerability described as very critical has been identified in LXC Incus up to 7.2.x. The impacted element is an unknown function of the component Storage Volume Configuration. Executing a manipulation of the argument block.create_options can lead to argument injection. This vulnerability is handled as CVE-2026-62867. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in LXC Incus up to 7.2.x. It has been declared as very critical. This vulnerability affects an unknown code block of the component Storage Volume Configuration. The manipulation of the argument block.create_options with an unknown input leads to a argument injection vulnerability. The CWE definition for the vulnerability is CWE-88. The product constructs a string for a command to be executed by a separate component in another control sphere, but it does not properly delimit the intended arguments, options, or switches within that command string. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Incus is a system container and virtual machine manager. Prior to version 7.3.0, improper validation of user-provided `block.create_options` in storage volume configuration leads to argument injection in the constructed filesystem creation command line. This allows a project-scoped user to inject arbitrary arguments into the binary executed as root. Version 7.3.0 patches the issue.

The advisory is available at github.com. This vulnerability was named CVE-2026-62867 since 07/14/2026. The exploitation appears to be easy. The attack can be initiated remotely. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 08/21/2026). This vulnerability is assigned to T1059 by the MITRE ATT&CK project.

Upgrading to version 7.3.0 eliminates this vulnerability.

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Productinfo

Vendor

• LXC

Name

• Incus

Version

• 7.0
• 7.1
• 7.2

Website

• Product: https://github.com/lxc/incus/

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