Canonical LXD up to 5.0.7/5.21.5/6.9 Instance Migration authorization

Summaryinfo

A vulnerability, which was classified as problematic, was found in Canonical LXD up to 5.0.7/5.21.5/6.9. This vulnerability affects unknown code of the component Instance Migration. Such manipulation leads to authorization. This vulnerability is documented as CVE-2026-63296. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Canonical LXD up to 5.0.7/5.21.5/6.9. Affected by this issue is some unknown functionality of the component Instance Migration. The manipulation with an unknown input leads to a authorization vulnerability. Using CWE to declare the problem leads to CWE-639. The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. Impacted is integrity, and availability. CVE summarizes:

An authorization bypass vulnerability in LXD allows an authenticated attacker to bypass target project restrictions during instance migration. When migrating an instance to a target project, LXD accepts configuration overrides without validating the new configuration against the target project's enforced restrictions. An attacker can exploit this flaw to move instances with disallowed high-privilege configurations into restricted projects, bypassing security controls.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-63296 since 07/16/2026. The exploitation is known to be easy. The attack may be launched remotely. There are neither technical details nor an exploit publicly available.

Upgrading to version 5.0.8, 5.21.6 or 6.10 eliminates this vulnerability.

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Productinfo

Vendor

• Canonical

Name

• LXD

Version

• 5.0.0
• 5.0.1
• 5.0.2
• 5.0.3
• 5.0.4
• 5.0.5
• 5.0.6
• 5.0.7
• 5.21.0
• 5.21.1
• 5.21.2
• 5.21.3
• 5.21.4
• 5.21.5
• 6.0
• 6.1
• 6.2
• 6.3
• 6.4
• 6.5
• 6.6
• 6.7
• 6.8
• 6.9

License

• open-source

Website

• Product: https://github.com/canonical/lxd/

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