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vuln-cve/data/2026/63xxx/CVE-2026-63297.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-63297",
"assignerOrgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
"state": "PUBLISHED",
"assignerShortName": "canonical",
"dateReserved": "2026-07-16T09:49:29.911Z",
"datePublished": "2026-08-12T19:25:24.420Z",
"dateUpdated": "2026-08-13T14:29:39.772Z"
},
"containers": {
"cna": {
"title": "Cross-project instance copy bypasses target project restrictions via TOCTOU in config merge",
"descriptions": [
{
"lang": "en",
"value": "An authorization bypass vulnerability in LXD due to a timing flaw during configuration merging allows an authenticated attacker to bypass target project restrictions during cross-project instance copies. When copying an instance to a target project, LXD performs restriction checks before configuration merging is complete, creating a time-of-check to time-of-use (TOCTOU) condition. An attacker can exploit this flaw to copy instances with disallowed high-privilege configurations into restricted projects, bypassing security controls."
}
],
"affected": [
{
"vendor": "Canonical",
"product": "LXD",
"packageName": "LXD",
"platforms": [
"Linux"
],
"repo": "https://github.com/canonical/lxd",
"defaultStatus": "unaffected",
"versions": [
{
"version": "5.0.0",
"status": "affected",
"versionType": "semver",
"lessThan": "5.0.8"
},
{
"version": "5.21.0",
"status": "affected",
"versionType": "semver",
"lessThan": "5.21.6"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"type": "CWE",
"lang": "en",
"description": "CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition",
"cweId": "CWE-367"
},
{
"type": "CWE",
"lang": "en",
"description": "CWE-863 Incorrect Authorization",
"cweId": "CWE-863"
}
]
}
],
"impacts": [
{
"capecId": "CAPEC-1",
"descriptions": [
{
"lang": "en",
"value": "Accessing Functionality Not Properly Constrained by ACLs"
}
]
},
{
"capecId": "CAPEC-122",
"descriptions": [
{
"lang": "en",
"value": "Privilege Abuse"
}
]
},
{
"capecId": "CAPEC-233",
"descriptions": [
{
"lang": "en",
"value": "Privilege Escalation"
}
]
}
],
"references": [
{
"url": "https://github.com/canonical/lxd/security/advisories/GHSA-v989-qw7w-xvg4",
"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": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH",
"baseScore": 9.9,
"baseSeverity": "CRITICAL"
}
}
],
"source": {
"discovery": "EXTERNAL"
},
"solutions": [
{
"lang": "en",
"value": "Upgrade to LXD version 5.0.8 or later, or 5.12.6 or later."
}
],
"providerMetadata": {
"orgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
"shortName": "canonical",
"dateUpdated": "2026-08-12T19:25:24.420Z"
}
},
"adp": [
{
"references": [
{
"url": "https://github.com/canonical/lxd/security/advisories/GHSA-v989-qw7w-xvg4",
"tags": [
"exploit"
]
}
],
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-08-13T14:28:52.383092Z",
"id": "CVE-2026-63297",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-08-13T14:29:39.772Z"
}
}
]
}
}