CVE-2026-9640
Detail
Undergoing Enrichment
This CVE record is currently being enriched by team members, this process results in the association of reference link tags, CVSS, CWE, and CPE applicability statement data
Description
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.
Metrics
NVD enrichment efforts reference publicly available information to associate
vector strings. CVSS information contributed by other sources is also
displayed.
CVSS 4.0 Severity and Vector Strings:
NVD assessment
not yet provided.
CVSS 3.x Severity and Vector Strings:
Base
Score:
NVD assessment
not yet provided.
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 Severity and Vector Strings:
Base
Score:
NVD assessment
not yet provided.
References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving NIST webspace.
We have provided these links to other web sites because they
may have information that would be of interest to you. No
inferences should be drawn on account of other sites being
referenced, or not, from this page. There may be other web
sites that are more appropriate for your purpose. NIST does
not necessarily endorse the views expressed, or concur with
the facts presented on these sites. Further, NIST does not
endorse any commercial products that may be mentioned on
these sites. Please address comments about this page to [email protected].
Weakness Enumeration
| CWE-ID |
CWE Name |
Source |
|
CWE-863
|
Incorrect Authorization |
Canonical Ltd.
|
Change History
3 change records found show changes
CVE Modified by CISA-ADP
6/27/2026 1:16:47 AM
| Action |
Type |
Old Value |
New Value |
| Changed |
SSVC |
{"timestamp":"2026-06-26T15:59:50.952818Z","id":"CVE-2026-9640","options":[{"exploitation":"poc"},{"automatable":"no"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}
|
{"timestamp":"2026-06-26T00:00:00+00:00","id":"CVE-2026-9640","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}
|
CVE Modified by CISA-ADP
6/26/2026 1:16:35 PM
| Action |
Type |
Old Value |
New Value |
| Added |
Reference |
https://github.com/canonical/lxd/security/advisories/GHSA-ppq7-4492-5552
|
| Added |
SSVC |
{"timestamp":"2026-06-26T15:59:50.952818Z","id":"CVE-2026-9640","options":[{"exploitation":"poc"},{"automatable":"no"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}
|
New CVE Received from Canonical Ltd.
6/26/2026 12:16:37 PM
| Action |
Type |
Old Value |
New Value |
| Added |
Description |
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.
|
| Added |
CVSS V3.1 |
AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
|
| Added |
CWE |
CWE-863
|
| Added |
Reference |
https://github.com/canonical/lxd/pull/18301
|
| Added |
Reference |
https://github.com/canonical/lxd/pull/18303
|
| Added |
Reference |
https://github.com/canonical/lxd/pull/18304
|
| Added |
Reference |
https://github.com/canonical/lxd/security/advisories/GHSA-ppq7-4492-5552
|
| Added |
Affected |
[{"vendor":"Canonical","product":"LXD","defaultStatus":"unaffected","packageName":"LXD","platforms":["Linux"],"repo":"https://github.com/canonical/lxd","versions":[{"version":"5.21.0","lessThan":"5.21.5","versionType":"semver","status":"affected"},{"version":"5.0.0","lessThan":"5.0.7","versionType":"semver","status":"affected"},{"version":"6.0","lessThan":"6.9","versionType":"semver","status":"affected"}]}]
|
Quick Info
CVE Dictionary Entry: CVE-2026-9640 NVD
Published Date: 06/26/2026 NVD
Last Modified: 06/27/2026
Source: Canonical Ltd.
|
