{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-86334", "assignerOrgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc", "state": "PUBLISHED", "assignerShortName": "canonical", "dateReserved": "2026-09-07T08:01:22.941Z", "datePublished": "2026-09-28T13:21:15.612Z", "dateUpdated": "2026-09-28T13:21:15.612Z"}, "containers": {"cna": {"title": "CLI Path Traversal via Content-Disposition in LXD Image Export/Copy", "datePublic": "2026-09-25T03:00:00.000Z", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-22", "description": "CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-126", "descriptions": [{"lang": "en", "value": "CAPEC-126 Path Traversal"}]}], "affected": [{"vendor": "Canonical", "product": "LXD", "platforms": ["Linux"], "packageName": "LXD", "repo": "https://github.com/canonical/lxd", "versions": [{"status": "affected", "version": "4.0.2", "lessThan": "4.0.14", "versionType": "semver"}, {"status": "affected", "version": "5.0.0", "lessThan": "5.0.10", "versionType": "semver"}, {"status": "affected", "version": "5.21.0", "lessThan": "5.21.8", "versionType": "semver"}, {"status": "affected", "version": "6.0", "lessThan": "6.10", "versionType": "semver"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "Path traversal in the CLI client image export and copy functionality in Canonical LXD from 4.0.2 before 4.0.14, 5.0.10, 5.21.8, and 6.10 on all platforms allows a remote malicious or machine-in-the-middle image server to overwrite arbitrary local files and execute code on the client system via a crafted Content-Disposition header filename parameter during unified image export or copy operations into a local directory target."}], "references": [{"url": "https://github.com/canonical/lxd/security/advisories/GHSA-g4cm-f533-78hq", "tags": ["vendor-advisory", "issue-tracking"]}, {"url": "https://github.com/canonical/lxd/pull/18977", "tags": ["patch"]}, {"url": "https://github.com/canonical/lxd/pull/18976", "tags": ["patch"]}, {"url": "https://github.com/canonical/lxd/pull/18974", "tags": ["patch"]}, {"url": "https://github.com/canonical/lxd/pull/18975", "tags": ["patch"]}, {"url": "https://github.com/canonical/lxd/pull/18940", "tags": ["patch"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "LOW", "baseSeverity": "MEDIUM", "baseScore": 4.2, "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:L"}}], "solutions": [{"lang": "en", "value": "Upgrade to LXD versions 4.0.14, 5.0.10, 5.21.8, 6.10 or later."}], "source": {"discovery": "UNKNOWN"}, "providerMetadata": {"orgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc", "shortName": "canonical", "dateUpdated": "2026-09-28T13:21:15.612Z"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "packageName": "LXD", "platforms": ["Linux"], "product": "LXD", "repo": "https://github.com/canonical/lxd", "vendor": "Canonical", "versions": [{"lessThan": "4.0.14", "status": "affected", "version": "4.0.2", "versionType": "semver"}, {"lessThan": "5.0.10", "status": "affected", "version": "5.0.0", "versionType": "semver"}, {"lessThan": "5.21.8", "status": "affected", "version": "5.21.0", "versionType": "semver"}, {"lessThan": "6.10", "status": "affected", "version": "6.0", "versionType": "semver"}]}], "source": "security@ubuntu.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Path traversal in the CLI client image export and copy functionality in Canonical LXD from 4.0.2 before 4.0.14, 5.0.10, 5.21.8, and 6.10 on all platforms allows a remote malicious or machine-in-the-middle image server to overwrite arbitrary local files and execute code on the client system via a crafted Content-Disposition header filename parameter during unified image export or copy operations into a local directory target."}], "id": "CVE-2026-86334", "lastModified": "2026-09-28T15:12:32.657", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 4.2, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 2.5, "source": "security@ubuntu.com", "type": "Secondary"}]}, "published": "2026-09-28T14:17:20.590", "references": [{"source": "security@ubuntu.com", "url": "https://github.com/canonical/lxd/pull/18940"}, {"source": "security@ubuntu.com", "url": "https://github.com/canonical/lxd/pull/18974"}, {"source": "security@ubuntu.com", "url": "https://github.com/canonical/lxd/pull/18975"}, {"source": "security@ubuntu.com", "url": "https://github.com/canonical/lxd/pull/18976"}, {"source": "security@ubuntu.com", "url": "https://github.com/canonical/lxd/pull/18977"}, {"source": "security@ubuntu.com", "url": "https://github.com/canonical/lxd/security/advisories/GHSA-g4cm-f533-78hq"}], "sourceIdentifier": "security@ubuntu.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-22"}], "source": "security@ubuntu.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": ["linux"], "status": "affected", "versions": {"scheme": "semver", "value": "[4.0.2,4.0.14)"}}, {"platform": ["linux"], "status": "affected", "versions": {"scheme": "semver", "value": "[5.0.0,5.0.10)"}}, {"platform": ["linux"], "status": "affected", "versions": {"scheme": "semver", "value": "[5.21.0,5.21.8)"}}, {"platform": ["linux"], "status": "affected", "versions": {"scheme": "generic", "value": "[6.0,6.10)"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "LXD", "source": "cna", "vendor": "Canonical"}, "product": "lxd", "vendor": "canonical"}], "created": "2026-09-28T15:00:03.805900+00:00", "updated": "2026-09-28T15:45:02.643415+00:00", "vendors": ["canonical", "canonical$PRODUCT$lxd"]}