CVE-2026-86334

{"id": "CVE-2026-86334", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-86334", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-09-28T17:55:41.286474Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security@ubuntu.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.2, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:L", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "HIGH", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 2.5, "exploitabilityScore": 1.6}]}, "affected": [{"source": "security@ubuntu.com", "affectedData": [{"repo": "https://github.com/canonical/lxd", "vendor": "Canonical", "product": "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"}], "platforms": ["Linux"], "packageName": "LXD", "defaultStatus": "unaffected"}]}], "published": "2026-09-28T14:17:20.590", "references": [{"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", "source": "security@ubuntu.com"}, {"url": "https://github.com/canonical/lxd/security/advisories/GHSA-g4cm-f533-78hq", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security@ubuntu.com", "description": [{"lang": "en", "value": "CWE-22"}]}], "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."}], "lastModified": "2026-09-28T18:17:25.683", "sourceIdentifier": "security@ubuntu.com"}