CVE-2026-63295: An authorization bypass vulnerability in LXD allows an authenticated attacker to bypass project-level container…
CVE-2026-63295 · Severity: medium · CVSS 4.3 · Published 2026-08-12
An authorization bypass vulnerability in LXD allows an authenticated attacker to bypass project-level container isolation restrictions. When a project is configured with restrictions on container privileges (such as enforcing restricted.containers.privilege=isolated), LXD fails to enforce the requirement if an instance configuration omits the security.idmap.isolated key. An attacker can exploit this flaw by creating or updating an instance without explicitly setting security.idmap.isolated, bypassing the target project's security constraints.
No. Junglewise Threat Intelligence has no report of CVE-2026-63295 being exploited in the wild.
How severe is CVE-2026-63295?
Medium severity, with a CVSS score of 4.3, published 12 August 2026.
Which products and versions are affected?
Canonical LXD. The advisory does not name versions.
Is there a fix for CVE-2026-63295?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2026-63295?
Check whether you run Canonical LXD. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.