9.9

CVE-2026-63300

Exploit

Cross-project instance move bypasses all project restrictions allowing host command execution

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Canonical ≫ Lxd Version >= 5.0.0 < 5.0.8
Canonical ≫ Lxd Version >= 5.1 < 5.21.6
Canonical ≫ Lxd Version >= 6.0 < 6.10
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.29% 0.215
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Canonical 9.9 3.1 6
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CWE-862 Missing Authorization

The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

https://github.com/canonical/lxd/pull/18651
Patch
https://github.com/canonical/lxd/pull/18605
Patch
Exploit
https://github.com/canonical/lxd/security/advisories/GHSA-5g5r-wh97-qcq2
Vendor Advisory
Exploit
Mitigation