Exploitation evidence
Not listed in the latest downloaded CISA KEV catalog. This does not establish an absence of exploitation.
KEV checked 13 Nov 2026, 00:20 Jerusalem · Original catalog ↗Reported products and versions
Canonical / LXD
Default status: unaffected
- affected: 5.21.0 to < 5.21.5 (semver)
- affected: 6.0 to < 6.9 (semver)
Fixes and workarounds
Upgrade to LXD version 5.21.5 or later, or 6.9 or later.
Sources and related reporting
CVE Program record ↗ · Download tracked evidence as JSON
- https://github.com/canonical/lxd/security/advisories/GHSA-j93m-3j9p-m5m8
- https://github.com/canonical/lxd/pull/18320
- https://github.com/canonical/lxd/pull/18390
Monitored source mentions
Shared CVE identifiers link source mentions; they do not establish that the reports describe the same incident.
Observed change timeline
History begins when Egret first downloads each source. It is not the complete upstream CVE history.
12 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-12",
"epss": 0.00548,
"percentile": 0.46417
}10 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-10",
"epss": 0.00548,
"percentile": 0.46252
}09 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-09",
"epss": 0.00548,
"percentile": 0.46196
}08 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-08",
"epss": 0.00548,
"percentile": 0.46177
}07 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-07",
"epss": 0.00548,
"percentile": 0.46151
}07 Nov 2026, 12:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-06",
"epss": 0.00548,
"percentile": 0.46095
}07 Nov 2026, 12:20 Jerusalem · CVE Program record changed
Stored CNA snapshot at this observation.
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-9639",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-26T16:01:50.334142Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-26T16:02:11.520Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://github.com/canonical/lxd/security/advisories/GHSA-j93m-3j9p-m5m8"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"packageName": "LXD",
"platforms": [
"Linux"
],
"product": "LXD",
"repo": "https://github.com/canonical/lxd",
"vendor": "Canonical",
"versions": [
{
"lessThan": "5.21.5",
"status": "affected",
"version": "5.21.0",
"versionType": "semver"
},
{
"lessThan": "6.9",
"status": "affected",
"version": "6.0",
"versionType": "semver"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Nil-pointer dereference in CreateCustomVolumeFromBackup in LXD up to version 6.8 and 5.21 on Linux allows an authenticated user with can_create_storage_volumes permissions to cause a denial of service via a specially crafted custom-volume backup tarball that omits the expires_at snapshot field."
}
],
"impacts": [
{
"capecId": "CAPEC-153",
"descriptions": [
{
"lang": "en",
"value": "Input Data Manipulation"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-476",
"description": "CWE-476 NULL pointer dereference",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-06-26T15:39:04.696Z",
"orgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
"shortName": "canonical"
},
"references": [
{
"tags": [
"vdb-entry",
"vendor-advisory"
],
"url": "https://github.com/canonical/lxd/security/advisories/GHSA-j93m-3j9p-m5m8"
},
{
"tags": [
"patch"
],
"url": "https://github.com/canonical/lxd/pull/18320"
},
{
"tags": [
"patch"
],
"url": "https://github.com/canonical/lxd/pull/18390"
}
],
"solutions": [
{
"lang": "en",
"value": "Upgrade to LXD version 5.21.5 or later, or 6.9 or later."
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Authenticated Denial of Service via Malicious Backup Tarball in LXD"
}
},
"cveMetadata": {
"assignerOrgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
"assignerShortName": "canonical",
"cveId": "CVE-2026-9639",
"datePublished": "2026-06-26T15:39:04.696Z",
"dateReserved": "2026-05-26T18:31:05.985Z",
"dateUpdated": "2026-06-26T16:02:11.520Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}