CVE-2026-63300 | BDVDB-2026-358377 Detail

Description#

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.

Impact#

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References#

Exploit#

History#

1. Version 12026-08-12Record published in the CVE List.
2. Version 22026-08-13Most recent update recorded in the CVE List.