{"id":"CVE-2026-85185","revision":null,"records":[{"revision":"30e17ec2aba34a08bd96dbc28a57c696","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-85185","aliases":[],"title":"Path traversal in LXD btrfs storage driver allows arbitrary file deletion and write on host as root","description":"Path traversal in the btrfs storage driver in Canonical LXD versions 4.0.2 and later (fixed in 4.0.14, 5.0.10, 5.21.8 and 6.10) on Linux allows an authenticated client with permission to create instances in a project to delete arbitrary files on the host as root. On hosts whose root filesystem is btrfs, the client can also place attacker-controlled content at arbitrary host paths, leading to full host compromise. The client does this with a crafted subvolume path containing ../ sequences, sent in either of two ways: in the optimized_header.yaml of an optimized btrfs backup, or in the btrfs migration header sent by a malicious migration source.","state":0,"publishedAt":"2026-09-28T13:21:51.596+00:00","modifiedAt":"2026-09-28T16:32:28.529+00:00","affected":[{"ecosystem":"Vendor product","name":"LXD","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Canonical\",\n                    \"product\": \"LXD\",\n                    \"platforms\": [\n                        \"Linux\"\n                    ],\n                    \"packageName\": \"LXD\",\n                    \"repo\": \"https://github.com/canonical/lxd\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"4.0.2\",\n                            \"lessThan\": \"4.0.14\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"5.0.0\",\n                            \"lessThan\": \"5.0.10\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"5.21.0\",\n                            \"lessThan\": \"5.21.8\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"6.0\",\n                            \"lessThan\": \"6.10\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H","score":9.6,"severity":"CRITICAL"}],"references":["https://github.com/canonical/lxd/security/advisories/GHSA-27q7-qwhm-c34p"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-85185","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-85185","identifiers":["CVE-2026-85185"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-12T08:55:39.4193399+00:00","complete":true,"records":1779,"lastAttemptAt":"2026-11-12T08:55:39.4193399+00:00","lastSuccessAt":"2026-11-12T08:55:39.5669336+00:00","error":null,"lastVerifiedAt":"2026-11-12T08:55:39.5669352+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-64752486c567b55b31fb0d7225f5222bcd0019564ac0ac5f0649e242c7b19299-cdca8464672f7a6b0a4c4e58984a9b57c5e15d71ae2ddc7e2ff782639942ab38","complete":true,"records":424631,"lastAttemptAt":"2026-11-12T08:53:35.355196+00:00","lastSuccessAt":"2026-11-12T08:53:35.3149634+00:00","error":null,"lastVerifiedAt":"2026-11-12T08:53:35.355196+00:00","snapshotPublishedAt":"2026-11-12T08:30:19+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-570328139368428ca550af1570d01579","complete":true,"records":13760,"lastAttemptAt":"2026-11-12T08:56:06.8263277+00:00","lastSuccessAt":"2026-11-12T06:55:06.923+00:00","error":null,"lastVerifiedAt":"2026-11-12T06:55:06.923+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13813,"expectedIdentifiers":13813,"failedIdentifiers":0},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-12T08:55:39.4193399+00:00","complete":true,"records":1097,"lastAttemptAt":"2026-11-12T08:55:39.4193399+00:00","lastSuccessAt":"2026-11-12T08:55:39.5676932+00:00","error":null,"lastVerifiedAt":"2026-11-12T08:55:39.5676956+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. 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