{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-34178",
        "assignerOrgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
        "state": "PUBLISHED",
        "assignerShortName": "canonical",
        "dateReserved": "2026-03-26T09:24:08.449Z",
        "datePublished": "2026-04-09T09:18:58.404Z",
        "dateUpdated": "2026-04-09T11:55:20.431Z"
    },
    "containers": {
        "cna": {
            "title": "Importing a crafted backup leads to project restriction bypass",
            "affected": [
                {
                    "vendor": "Canonical",
                    "product": "lxd",
                    "platforms": [
                        "Linux"
                    ],
                    "collectionURL": "https://github.com/canonical",
                    "packageName": "lxd",
                    "repo": "https://github.com/canonical/lxd",
                    "programFiles": [
                        "permissions.go"
                    ],
                    "versions": [
                        {
                            "status": "affected",
                            "version": "4.12.0",
                            "lessThan": "5.0.7",
                            "versionType": "semver"
                        },
                        {
                            "status": "affected",
                            "version": "5.1.0",
                            "lessThan": "5.21.5",
                            "versionType": "semver"
                        },
                        {
                            "status": "affected",
                            "version": "6.0.0",
                            "lessThan": "6.8.0",
                            "versionType": "semver"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "cweId": "CWE-20",
                            "description": "CWE-20 Improper input validation",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In Canonical LXD before 6.8, the backup import path validates project restrictions against backup/index.yaml in the supplied tar archive but creates the instance from backup/container/backup.yaml, a separate file in the same archive that is never checked against project restrictions. An authenticated remote attacker with instance-creation permission in a restricted project can craft a backup archive where backup.yaml carries restricted settings such as security.privileged=true or raw.lxc directives, bypassing all project restriction enforcement and allowing full host compromise."
                }
            ],
            "references": [
                {
                    "url": "https://github.com/canonical/lxd/security/advisories/GHSA-q96j-3fmm-7fv4",
                    "name": "Importing a crafted backup leads to project restriction bypass",
                    "tags": [
                        "vdb-entry",
                        "vendor-advisory"
                    ]
                },
                {
                    "url": "https://github.com/canonical/lxd/pull/17921",
                    "name": "Import: Create backup config from index",
                    "tags": [
                        "patch",
                        "issue-tracking"
                    ]
                }
            ],
            "metrics": [
                {
                    "format": "CVSS",
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "GENERAL"
                        }
                    ],
                    "cvssV3_1": {
                        "version": "3.1",
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "privilegesRequired": "HIGH",
                        "userInteraction": "NONE",
                        "scope": "CHANGED",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "availabilityImpact": "HIGH",
                        "baseSeverity": "CRITICAL",
                        "baseScore": 9.1,
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H"
                    }
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "Miha Purg",
                    "type": "finder"
                }
            ],
            "source": {
                "discovery": "INTERNAL"
            },
            "providerMetadata": {
                "orgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
                "shortName": "canonical",
                "dateUpdated": "2026-04-09T09:18:58.404Z"
            }
        },
        "adp": [
            {
                "references": [
                    {
                        "url": "https://github.com/canonical/lxd/security/advisories/GHSA-q96j-3fmm-7fv4",
                        "tags": [
                            "exploit"
                        ]
                    }
                ],
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-04-09T11:54:57.626476Z",
                                "id": "CVE-2026-34178",
                                "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": "2026-04-09T11:55:20.431Z"
                }
            }
        ]
    }
}