9.9
Critical
CVE-2026-63300 An improper validation vulnerability in the instancePostMigration function in lxd/instance_post.go of LXD allows an…
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.
Affected products and versions
Other CVEs of LXD
The 47 CVEs of LXD →
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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,…
10.0
Critical
CVE-2026-87798
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5.8
Medium
CVE-2026-87799
Improper link resolution in the migration receive path in Canonical LXD versions 4.0 and later (fixed in 4.0.14, 5.0.10,…
9.9
Critical
CVE-2026-97335
Incorrect authorization in the custom storage volume creation endpoint in Canonical LXD versions 5.0.0 and later…
7.7
High