{"id":"CVE-2026-9640","aliases":["DEBIAN-CVE-2026-9640","EUVD-2026-39794","GHSA-ppq7-4492-5552"],"status":"published","title":"LXD Snapshot Import Privilege Escalation Vulnerability","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.","severity":{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00632,"percentile":0.506,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-863"],"published":"2026-06-26T15:50:38Z","modified":"2026-10-28T02:30:49Z","fixes":[{"ecosystem":"Debian:13","package":"lxd","fixed_in":["5.0.2+git20231211.1364ae4-9+deb13u7"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"lxd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.0.2+git20231211.1364ae4-1","5.0.2+git20231211.1364ae4-2","5.0.2+git20231211.1364ae4-3","5.0.2+git20231211.1364ae4-4","5.0.2+git20231211.1364ae4-5","5.0.2+git20231211.1364ae4-6","5.0.2+git20231211.1364ae4-7","5.0.2+git20231211.1364ae4-8","5.0.2+git20231211.1364ae4-9","5.0.2-5","5.0.2-5+deb12u1","5.0.2-5+deb12u2","5.0.2-5+deb12u3","5.0.2-5+deb12u4","5.0.2-5+deb12u5","5.0.2-5+deb12u6","5.0.2-6"]},{"source":"osv","ecosystem":"Debian:13","package":"lxd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.0.2+git20231211.1364ae4-9+deb13u7"}]}],"versions":["5.0.2+git20231211.1364ae4-9","5.0.2+git20231211.1364ae4-9+deb13u1","5.0.2+git20231211.1364ae4-9+deb13u2","5.0.2+git20231211.1364ae4-9+deb13u3","5.0.2+git20231211.1364ae4-9+deb13u4","5.0.2+git20231211.1364ae4-9+deb13u5","5.0.2+git20231211.1364ae4-9+deb13u6"]}],"products":[{"vendor":"canonical","product":"lxd"}],"references":[{"url":"https://github.com/canonical/lxd/security/advisories/GHSA-ppq7-4492-5552","tags":["vdb-entry","vendor-advisory","exploit","Exploit","advisory"]},{"url":"https://github.com/canonical/lxd/pull/18301","tags":["patch","Issue Tracking","Patch","fix"]},{"url":"https://github.com/canonical/lxd/pull/18303","tags":["patch","Issue Tracking","Patch","fix"]},{"url":"https://github.com/canonical/lxd/pull/18304","tags":["patch","Issue Tracking","Patch","fix"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/9xxx/CVE-2026-9640.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-9640","tags":["advisory"]},{"url":"https://github.com/canonical/lxd","tags":["package"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-9640","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-9640","title":"LXD Snapshot Import Privilege Escalation Vulnerability","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.","status":"published","published":"2026-06-26T15:50:38.453Z","modified":"2026-06-30T03:55:24.628Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T13:42:37.965383Z"}],"euvd":[{"id":"EUVD-2026-39794","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.","status":"published","published":"2026-06-26T15:50:38Z","modified":"2026-06-30T03:55:24Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T18:20:22.124605Z"}],"nvd":[{"id":"CVE-2026-9640","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.","status":"published","published":"2026-06-26T16:16:37.25Z","modified":"2026-10-25T17:10:00.197Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:12:26.045561Z"}],"osv":[{"id":"CVE-2026-9640","title":"LXD Snapshot Import Privilege Escalation Vulnerability","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.","status":"published","published":"2026-06-26T15:50:38.453Z","modified":"2026-10-28T02:30:49.622363405Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T15:45:21.262447Z"},{"id":"DEBIAN-CVE-2026-9640","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.","status":"published","published":"2026-06-26T16:16:37.25Z","modified":"2026-10-26T11:47:30.866448121Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:46:07.324252Z"}]}}