Canonical LXD up to 4.0.14/5.0.10/5.21.8/6.10.0 HTTPS Listener certificate validation

Summaryinfo

A vulnerability labeled as problematic has been found in Canonical LXD up to 4.0.14/5.0.10/5.21.8/6.10.0. Impacted is an unknown function of the component HTTPS Listener. Such manipulation leads to certificate validation. This vulnerability is documented as CVE-2026-112816. The attack can be executed remotely. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Canonical LXD up to 4.0.14/5.0.10/5.21.8/6.10.0. It has been rated as problematic. Affected by this issue is an unknown part of the component HTTPS Listener. The manipulation with an unknown input leads to a certificate validation vulnerability. Using CWE to declare the problem leads to CWE-295. The product does not validate, or incorrectly validates, a certificate. Impacted is integrity. CVE summarizes:

Improper certificate validation in the HTTPS listener in Canonical LXD 4.0.14, 5.0.10, 5.21.8, 6.9 before 4.0.15, 5.0.11, 5.21.9, 6.10.1 allows an unauthenticated attacker to authenticate as any trusted client and gain full access to the cluster and managed virtual machines via a crafted certificate chain.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-112816 since 10/19/2026. The exploitation is known to be difficult. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1587.003.

Upgrading to version 4.0.15, 5.0.11, 5.21.9 or 6.10.1 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• Canonical

Name

• LXD

Version

• 4.0.0
• 4.0.1
• 4.0.2
• 4.0.3
• 4.0.4
• 4.0.5
• 4.0.6
• 4.0.7
• 4.0.8
• 4.0.9
• 4.0.10
• 4.0.11
• 4.0.12
• 4.0.13
• 4.0.14
• 5.0.0
• 5.0.1
• 5.0.2
• 5.0.3
• 5.0.4
• 5.0.5
• 5.0.6
• 5.0.7
• 5.0.8
• 5.0.9
• 5.0.10
• 5.21.0
• 5.21.1
• 5.21.2
• 5.21.3
• 5.21.4
• 5.21.5
• 5.21.6
• 5.21.7
• 5.21.8
• 6.0
• 6.1
• 6.2
• 6.3
• 6.4
• 6.5
• 6.6
• 6.7
• 6.8
• 6.9
• 6.10.0

License

• open-source

Website

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

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Once again VulDB remains the best source for vulnerability data.

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