{"apiVersion":"1.0","identifier":"CVE-2026-63300","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.","publishedAt":"2026-08-12T20:17:47","lastModifiedAt":"2026-08-28T15:24:38","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-63300","cvssScore":9.9,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","epssProbability":0.00291,"riskScore":1.02,"affectedProduct":"LXD","affectedVersions":"unknown","vulnerabilityType":"Other","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-63300","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-63300","en":"https://www.redsauce.net/en/cves/CVE-2026-63300","fr":"https://www.redsauce.net/fr/cves/CVE-2026-63300","pt":"https://www.redsauce.net/pt/cves/CVE-2026-63300","de":"https://www.redsauce.net/de/cves/CVE-2026-63300","sk":"https://www.redsauce.net/sk/cves/CVE-2026-63300","el":"https://www.redsauce.net/el/cves/CVE-2026-63300"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-63300"}}