CVE-2026-9640 (GCVE-0-2026-9640)
Vulnerability from cvelistv5 – Published: 2026-06-26 15:50 – Updated: 2026-06-30 03:55
VLAI
EPSS
VEX
Title
LXD Snapshot Import Privilege Escalation Vulnerability
Summary
A privilege escalation vulnerability exists in LXD from 6.0 before 6.9, 5.21.0 before 5.21.5, and 5.0.0 before 5.0.7 regarding the handling of project-restriction policies during snapshot restoration.. An authenticated project operator in a restricted multi-tenant environment can bypass policy restrictions by importing a maliciously crafted instance backup containing restricted configuration keys within a snapshot. When the snapshot is restored, these restricted keys are applied to the live instance without policy validation. Starting the modified instance grants the operator unauthorized host root access.
Severity
7.2 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-26 00:00 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/canonical/lxd/security/advisor… | vdb-entryvendor-advisory |
| https://github.com/canonical/lxd/pull/18301 | patch |
| https://github.com/canonical/lxd/pull/18303 | patch |
| https://github.com/canonical/lxd/pull/18304 | patch |
Impacted products
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-9640",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-26T00:00:00+00:00",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-30T03:55:24.628Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://github.com/canonical/lxd/security/advisories/GHSA-ppq7-4492-5552"
}
],
"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": "5.0.7",
"status": "affected",
"version": "5.0.0",
"versionType": "semver"
},
{
"lessThan": "6.9",
"status": "affected",
"version": "6.0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Miha Purg"
}
],
"descriptions": [
{
"lang": "en",
"value": "A privilege escalation vulnerability exists in LXD from 6.0 before 6.9, 5.21.0 before 5.21.5, and 5.0.0 before 5.0.7 regarding the handling of project-restriction policies during snapshot restoration.. An authenticated project operator in a restricted multi-tenant environment can bypass policy restrictions by importing a maliciously crafted instance backup containing restricted configuration keys within a snapshot. When the snapshot is restored, these restricted keys are applied to the live instance without policy validation. Starting the modified instance grants the operator unauthorized host root access."
}
],
"impacts": [
{
"capecId": "CAPEC-153",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-153: Input Data Manipulation"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.2,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "HIGH",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-863",
"description": "CWE-863: Incorrect Authorization",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-06-26T15:50:38.453Z",
"orgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
"shortName": "canonical"
},
"references": [
{
"tags": [
"vdb-entry",
"vendor-advisory"
],
"url": "https://github.com/canonical/lxd/security/advisories/GHSA-ppq7-4492-5552"
},
{
"tags": [
"patch"
],
"url": "https://github.com/canonical/lxd/pull/18301"
},
{
"tags": [
"patch"
],
"url": "https://github.com/canonical/lxd/pull/18303"
},
{
"tags": [
"patch"
],
"url": "https://github.com/canonical/lxd/pull/18304"
}
],
"solutions": [
{
"lang": "en",
"value": "Upgrade to LXD version 6.9 or later, 5.21.5 or later, or 5.0.7 or later."
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "LXD Snapshot Import Privilege Escalation Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
"assignerShortName": "canonical",
"cveId": "CVE-2026-9640",
"datePublished": "2026-06-26T15:50:38.453Z",
"dateReserved": "2026-05-26T18:31:24.593Z",
"dateUpdated": "2026-06-30T03:55:24.628Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-9640",
"date": "2026-09-21",
"epss": "0.00632",
"percentile": "0.48605"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"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": "5.0.7",
"status": "affected",
"version": "5.0.0",
"versionType": "semver"
},
{
"lessThan": "6.9",
"status": "affected",
"version": "6.0",
"versionType": "semver"
}
]
}
],
"source": "security@ubuntu.com"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:canonical:lxd:*:*:*:*:*:*:*:*",
"matchCriteriaId": "847C5578-B73F-45BA-8E6E-C9F69B7E3254",
"versionEndExcluding": "5.0.7",
"versionStartIncluding": "4.12",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:canonical:lxd:*:*:*:*:*:*:*:*",
"matchCriteriaId": "BBD4ACC0-A547-4D52-B4E7-AD7ACD9D6081",
"versionEndExcluding": "5.21.5",
"versionStartIncluding": "5.21.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:canonical:lxd:*:*:*:*:*:*:*:*",
"matchCriteriaId": "C25E18E8-CDDF-4F3A-A80E-F27456981A4B",
"versionEndExcluding": "6.9",
"versionStartIncluding": "6.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A privilege escalation vulnerability exists in LXD from 6.0 before 6.9, 5.21.0 before 5.21.5, and 5.0.0 before 5.0.7 regarding the handling of project-restriction policies during snapshot restoration.. An authenticated project operator in a restricted multi-tenant environment can bypass policy restrictions by importing a maliciously crafted instance backup containing restricted configuration keys within a snapshot. When the snapshot is restored, these restricted keys are applied to the live instance without policy validation. Starting the modified instance grants the operator unauthorized host root access."
}
],
"id": "CVE-2026-9640",
"lastModified": "2026-07-02T13:29:28.853",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.2,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "HIGH",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.2,
"impactScore": 5.9,
"source": "security@ubuntu.com",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-9640",
"options": [
{
"exploitation": "poc"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-26T00:00:00+00:00",
"version": "2.0.3"
}
}
]
},
"published": "2026-06-26T16:16:37.250",
"references": [
{
"source": "security@ubuntu.com",
"tags": [
"Issue Tracking",
"Patch"
],
"url": "https://github.com/canonical/lxd/pull/18301"
},
{
"source": "security@ubuntu.com",
"tags": [
"Issue Tracking",
"Patch"
],
"url": "https://github.com/canonical/lxd/pull/18303"
},
{
"source": "security@ubuntu.com",
"tags": [
"Issue Tracking",
"Patch"
],
"url": "https://github.com/canonical/lxd/pull/18304"
},
{
"source": "security@ubuntu.com",
"tags": [
"Exploit"
],
"url": "https://github.com/canonical/lxd/security/advisories/GHSA-ppq7-4492-5552"
},
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"tags": [
"Exploit"
],
"url": "https://github.com/canonical/lxd/security/advisories/GHSA-ppq7-4492-5552"
}
],
"sourceIdentifier": "security@ubuntu.com",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-863"
}
],
"source": "security@ubuntu.com",
"type": "Secondary"
}
]
}
},
"vulnrichment": {
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-9640",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-26T15:59:50.952818Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-26T16:00:17.949Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://github.com/canonical/lxd/security/advisories/GHSA-ppq7-4492-5552"
}
],
"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": "5.0.7",
"status": "affected",
"version": "5.0.0",
"versionType": "semver"
},
{
"lessThan": "6.9",
"status": "affected",
"version": "6.0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Miha Purg"
}
],
"descriptions": [
{
"lang": "en",
"value": "A privilege escalation vulnerability exists in LXD from 6.0 before 6.9, 5.21.0 before 5.21.5, and 5.0.0 before 5.0.7 regarding the handling of project-restriction policies during snapshot restoration.. An authenticated project operator in a restricted multi-tenant environment can bypass policy restrictions by importing a maliciously crafted instance backup containing restricted configuration keys within a snapshot. When the snapshot is restored, these restricted keys are applied to the live instance without policy validation. Starting the modified instance grants the operator unauthorized host root access."
}
],
"impacts": [
{
"capecId": "CAPEC-153",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-153: Input Data Manipulation"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.2,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "HIGH",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-863",
"description": "CWE-863: Incorrect Authorization",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-06-26T15:50:38.453Z",
"orgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
"shortName": "canonical"
},
"references": [
{
"tags": [
"vdb-entry",
"vendor-advisory"
],
"url": "https://github.com/canonical/lxd/security/advisories/GHSA-ppq7-4492-5552"
},
{
"tags": [
"patch"
],
"url": "https://github.com/canonical/lxd/pull/18301"
},
{
"tags": [
"patch"
],
"url": "https://github.com/canonical/lxd/pull/18303"
},
{
"tags": [
"patch"
],
"url": "https://github.com/canonical/lxd/pull/18304"
}
],
"solutions": [
{
"lang": "en",
"value": "Upgrade to LXD version 6.9 or later, 5.21.5 or later, or 5.0.7 or later."
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "LXD Snapshot Import Privilege Escalation Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
"assignerShortName": "canonical",
"cveId": "CVE-2026-9640",
"datePublished": "2026-06-26T15:50:38.453Z",
"dateReserved": "2026-05-26T18:31:24.593Z",
"dateUpdated": "2026-06-30T03:55:24.628Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
Loading…