CVE-2026-63295

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.

CVSS 3.1

4.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

EPSS

0.3% chance of exploitation in the next 30 days; higher than 28% of CVEs (scores of 2026-10-25)

CWE

CWE-863

Published

2026-08-12

Modified

2026-10-24

Record from

the NVD, synced 2026-10-24

Affected

• canonical:lxd

References

• https://github.com/canonical/lxd/security/advisories/GHSA-7vp9-3vmp-c5jm
• https://github.com/canonical/lxd/security/advisories/GHSA-7vp9-3vmp-c5jm

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