LXD Snapshot Import Privilege Escalation Vulnerability_CVE-2026-9640

{
    "lastseen": "",
    "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.",
    "published": "2026-06-26T15:50:38.453Z",
    "modified": "2026-06-26T16:00:24.172Z",
    "type": "cve",
    "title": "LXD Snapshot Import Privilege Escalation Vulnerability",
    "source": "canonical",
    "references": "https://github.com/canonical/lxd/security/advisories/GHSA-ppq7-4492-5552\nhttps://github.com/canonical/lxd/pull/18301\nhttps://github.com/canonical/lxd/pull/18303\nhttps://github.com/canonical/lxd/pull/18304",
    "id": "CVE-2026-9640",
    "bulletinFamily": "",
    "cwe": [
        "CWE-863"
    ],
    "cvelist": null,
    "sourceData": "Canonical LXD 5.21.0\nCanonical LXD 5.0.0\nCanonical LXD 6.0",
    "sourceHref": "",
    "cvss": {
        "score": 7.2,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "LXD",
    "version": "5.21.0",
    "vendor": "Canonical",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}