{"cve":{"cve_id":"CVE-2026-34178","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.00424,"epss_percentile":0.33858,"epss_as_of":"2026-06-23","description":"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.","published_at":"2026-04-09T09:18:58.404000Z","last_modified_at":null,"cvss_v3_score":9.1,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","cvss_v3_severity":"CRITICAL","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":["CWE-20"],"nvd_references":["https://github.com/canonical/lxd/security/advisories/GHSA-q96j-3fmm-7fv4","https://github.com/canonical/lxd/pull/17921"],"vuln_status":null,"trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:39.878444Z","updated_at":"2026-06-28T23:29:57.324527Z"},"effective_severity":"CRITICAL","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"H","value_label":"High"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"C","value_label":"Changed"},{"metric":"C","name":"Confidentiality","value":"H","value_label":"High"},{"metric":"I","name":"Integrity","value":"H","value_label":"High"},{"metric":"A","name":"Availability","value":"H","value_label":"High"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"canonical","vendor_name":"Canonical","product_slug":"lxd","product_name":"LXD","version_start":"4.12.0","version_start_inclusive":true,"version_end":"5.0.7","version_end_inclusive":false,"cpe23_uri":"cve5:canonical:lxd:4.12.0:5.0.7"},{"vendor_slug":"canonical","vendor_name":"Canonical","product_slug":"lxd","product_name":"LXD","version_start":"5.1.0","version_start_inclusive":true,"version_end":"5.21.5","version_end_inclusive":false,"cpe23_uri":"cve5:canonical:lxd:5.1.0:5.21.5"},{"vendor_slug":"canonical","vendor_name":"Canonical","product_slug":"lxd","product_name":"LXD","version_start":"6.0.0","version_start_inclusive":true,"version_end":"6.8.0","version_end_inclusive":false,"cpe23_uri":"cve5:canonical:lxd:6.0.0:6.8.0"}],"exploit_refs":[],"news":[],"references":[{"url":"https://github.com/canonical/lxd/security/advisories/GHSA-q96j-3fmm-7fv4","source_type":"VENDOR_ADVISORY","tags":["advisory"]},{"url":"https://github.com/canonical/lxd/pull/17921","source_type":"PATCH","tags":["patch"]}],"timeline":[{"type":"published","at":"2026-04-09T09:18:58.404000Z","label":"CVE published","source":null},{"type":"cvss_changed","at":"2026-06-28T17:53:20.032350Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:53:20.032350Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:53:20.032350Z","label":"CVSS score revised","source":"cvelistv5"}]}