CVE-2026-63300

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Source
https://cve.org/CVERecord?id=CVE-2026-63300
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63300.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-63300
Aliases
  • GHSA-5g5r-wh97-qcq2
Downstream
Published
2026-08-12T19:09:04.445Z
Modified
2026-08-15T11:30:51.299341797Z
Severity
  • 9.9 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
Summary
Cross-project instance move bypasses all project restrictions allowing host command execution
Details

An improper validation vulnerability in the instancePostMigration function in lxd/instancepost.go of LXD allows an authenticated attacker with cancreate_instances permissions on a restricted project to bypass project-level security restrictions. When migrating an instance between projects, LXD fails to validate the instance's configuration against the target project's enforced restrictions (such as restricted.containers.lowlevel, restricted.devices.*, and restricted.networks.access). An attacker can exploit this by creating a disallowed or high-privilege instance in an unrestricted project and subsequently moving it into the restricted project.

Database specific 
{
    "cwe_ids": [
        "CWE-862"
    ],
    "unresolved_ranges": [
        {
            "source": "AFFECTED_FIELD",
            "extracted_events": [
                {
                    "introduced": "6.0"
                },
                {
                    "fixed": "6.10"
                }
            ]
        }
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63300.json",
    "cna_assigner": "canonical"
}
References

Affected packages

Git / github.com/canonical/lxd

Affected ranges

Type
GIT
Repo
https://github.com/canonical/lxd
Events
Introduced
1e1349e3cbf30c1b2ce74e531d4dd0fd52c45be1
Fixed
58b58151cfc3bd9fb0fedce26fcdd73a3e67bdb8
Introduced
761d134ceabd306f57acfb0ca51f59b03751a5b0
Fixed
c6146714d0cacd04b77598bac149f5db714834f6
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "5.0.0"
        },
        {
            "fixed": "5.0.8"
        },
        {
            "introduced": "5.21.0"
        },
        {
            "fixed": "5.21.6"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

lxd-5.*
lxd-5.0.0
lxd-5.0.1
lxd-5.0.2
lxd-5.0.7
lxd-5.1
lxd-5.10
lxd-5.11
lxd-5.12
lxd-5.13
lxd-5.14
lxd-5.15
lxd-5.16
lxd-5.17
lxd-5.2
lxd-5.21.5
lxd-5.3
lxd-5.4
lxd-5.5
lxd-5.6
lxd-5.7
lxd-5.8
lxd-5.9

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63300.json"