{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-66898",
        "assignerOrgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
        "state": "PUBLISHED",
        "assignerShortName": "canonical",
        "dateReserved": "2026-07-28T07:41:26.311Z",
        "datePublished": "2026-08-12T20:07:32.889Z",
        "dateUpdated": "2026-08-13T13:40:18.070Z"
    },
    "containers": {
        "cna": {
            "title": "Path traversal via unvalidated instance name in backup tarball restore enables root file write / RCE",
            "descriptions": [
                {
                    "lang": "en",
                    "value": "A path traversal vulnerability in LXD allows an attacker to manipulate file system paths during backup import and restore operations. When importing or restoring a backup archive, LXD fails to validate instance and storage volume names contained within the archive metadata. An attacker can exploit this flaw by supplying a crafted backup archive with malicious instance or volume names containing path traversal sequences, potentially allowing file access or overwriting outside the designated restore directory."
                }
            ],
            "affected": [
                {
                    "vendor": "Canonical",
                    "product": "LXD",
                    "packageName": "LXD",
                    "platforms": [
                        "Linux"
                    ],
                    "repo": "https://github.com/canonical/lxd",
                    "defaultStatus": "unaffected",
                    "versions": [
                        {
                            "version": "4.0.0",
                            "status": "affected",
                            "versionType": "semver",
                            "lessThan": "4.0.12"
                        },
                        {
                            "version": "5.0.0",
                            "status": "affected",
                            "versionType": "semver",
                            "lessThan": "5.0.4"
                        },
                        {
                            "version": "5.21.0",
                            "status": "affected",
                            "versionType": "semver",
                            "lessThan": "5.21.2"
                        },
                        {
                            "version": "6.0",
                            "status": "affected",
                            "versionType": "semver",
                            "lessThan": "6.1"
                        }
                    ]
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "type": "CWE",
                            "lang": "en",
                            "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')",
                            "cweId": "CWE-22"
                        }
                    ]
                }
            ],
            "impacts": [
                {
                    "capecId": "CAPEC-126",
                    "descriptions": [
                        {
                            "lang": "en",
                            "value": "Path Traversal"
                        }
                    ]
                },
                {
                    "capecId": "CAPEC-153",
                    "descriptions": [
                        {
                            "lang": "en",
                            "value": "Input Data Manipulation"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://github.com/canonical/lxd/security/advisories/GHSA-m857-c7gc-c984",
                    "tags": [
                        "vdb-entry",
                        "vendor-advisory"
                    ]
                }
            ],
            "metrics": [
                {
                    "format": "CVSS",
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "GENERAL"
                        }
                    ],
                    "cvssV3_1": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "privilegesRequired": "LOW",
                        "userInteraction": "NONE",
                        "scope": "CHANGED",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "availabilityImpact": "HIGH",
                        "baseScore": 9.9,
                        "baseSeverity": "CRITICAL"
                    }
                }
            ],
            "source": {
                "discovery": "EXTERNAL"
            },
            "solutions": [
                {
                    "lang": "en",
                    "value": "Upgrade to LXD version 4.0.12 or later, 5.0.4 or later, or 5.12.2 or later, or 6.0 or later."
                }
            ],
            "providerMetadata": {
                "orgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
                "shortName": "canonical",
                "dateUpdated": "2026-08-12T20:07:32.889Z"
            }
        },
        "adp": [
            {
                "references": [
                    {
                        "url": "https://github.com/canonical/lxd/security/advisories/GHSA-m857-c7gc-c984",
                        "tags": [
                            "exploit"
                        ]
                    }
                ],
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-08-13T13:40:15.405663Z",
                                "id": "CVE-2026-66898",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "total"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-08-13T13:40:18.070Z"
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}