CVE-2026-63300 Affecting lxd package, versions *
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIAN13-LXD-18806143
- published15 Aug 2026
- disclosed12 Aug 2026
Introduced: 12 Aug 2026
NewCVE-2026-63300 (opens in a new tab)How to fix?
There is no fixed version for Debian:13 lxd.
NVD Description
Note: Versions mentioned in the description apply only to the upstream lxd package and not the lxd package as distributed by Debian.
See How to fix? for Debian:13 relevant fixed versions and status.
An improper validation vulnerability in the instancePostMigration function in lxd/instance_post.go of LXD allows an authenticated attacker with can_create_instances permissions on a restricted project to bypass project-level security restrictions. When migrating an instance between projects, LXD fails to validate the instance's configuration against the target project's enforced restrictions (such as restricted.containers.lowlevel, restricted.devices.*, and restricted.networks.access). An attacker can exploit this by creating a disallowed or high-privilege instance in an unrestricted project and subsequently moving it into the restricted project.