{"id":"CVE-2026-63299","state":"PUBLISHED","title":"Storage volume cross-project move and snapshot restore bypass project disk limits","description":"An authorization bypass vulnerability in LXD allows an authenticated user to bypass project-level disk and volume limits. Two related code paths fail to verify resource limits during volume operations: the storagePoolVolumeTypePostMove function omits the limits.AllowVolumeCreation check before moving a volume across projects, and volume snapshot restore operations skip the AllowVolumeUpdate check when the configuration is nil (Config == nil). An attacker can exploit these flaws to allocate storage resources that exceed the administrative limits configured for a project.","publishedAt":"2026-08-12T19:17:07.418Z","updatedAt":"2026-08-12T19:26:28.110Z","severity":{"score":8.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","source":"canonical"},"assigner":"canonical","products":["Canonical LXD"],"affected":[{"vendor":"Canonical","product":"LXD","packageName":"LXD","defaultStatus":"unaffected","versions":[{"version":"5.0.0","status":"affected","lessThan":"5.0.8","versionType":"semver"},{"version":"5.21.0","status":"affected","lessThan":"5.21.6","versionType":"semver"},{"version":"6.0","status":"affected","lessThan":"6.10","versionType":"semver"}],"platforms":["Linux"],"repo":"https://github.com/canonical/lxd"}],"references":["https://github.com/canonical/lxd/security/advisories/GHSA-5h78-p252-989h"],"weaknesses":["CWE-770"],"ingestedAt":"2026-10-29T20:12:41.951Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/63xxx/CVE-2026-63299.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-63299","state":"PUBLISHED","datePublished":"2026-08-12T19:17:07.418Z","dateUpdated":"2026-08-12T19:26:28.110Z","assignerShortName":"canonical","assignerOrgId":"cc1ad9ee-3454-478d-9317-d3e869d708bc","dateReserved":"2026-07-16T10:01:05.653Z"},"containers":{"cna":{"title":"Storage volume cross-project move and snapshot restore bypass project disk limits","descriptions":[{"lang":"en","value":"An authorization bypass vulnerability in LXD allows an authenticated user to bypass project-level disk and volume limits. Two related code paths fail to verify resource limits during volume operations: the storagePoolVolumeTypePostMove function omits the limits.AllowVolumeCreation check before moving a volume across projects, and volume snapshot restore operations skip the AllowVolumeUpdate check when the configuration is nil (Config == nil). An attacker can exploit these flaws to allocate storage resources that exceed the administrative limits configured for a project."}],"affected":[{"vendor":"Canonical","product":"LXD","packageName":"LXD","defaultStatus":"unaffected","versions":[{"version":"5.0.0","status":"affected","lessThan":"5.0.8","versionType":"semver"},{"version":"5.21.0","status":"affected","lessThan":"5.21.6","versionType":"semver"},{"version":"6.0","status":"affected","lessThan":"6.10","versionType":"semver"}],"platforms":["Linux"],"repo":"https://github.com/canonical/lxd"}],"references":[{"url":"https://github.com/canonical/lxd/security/advisories/GHSA-5h78-p252-989h","tags":["vdb-entry","vendor-advisory"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"HIGH","baseScore":8.5,"baseSeverity":"HIGH"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-770","lang":"en","description":"CWE-770 Allocation of Resources Without Limits or Throttling","type":"CWE"}]}],"providerMetadata":{"shortName":"canonical","orgId":"cc1ad9ee-3454-478d-9317-d3e869d708bc","dateUpdated":"2026-08-12T19:17:07.418Z"},"impacts":[{"capecId":"CAPEC-1","descriptions":[{"lang":"en","value":"Accessing Functionality Not Properly Constrained by ACLs"}]},{"capecId":"CAPEC-122","descriptions":[{"lang":"en","value":"Privilege Abuse"}]}],"source":{"discovery":"EXTERNAL"},"solutions":[{"lang":"en","value":"Upgrade to LXD version 5.0.8 or later, 5.21.6 or later, or 6.10 or later."}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-12T19:26:19.187565Z","id":"CVE-2026-63299","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-12T19:26:28.110Z"}}]}}}