CVE-2026-63293

{"id": "CVE-2026-63293", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-63293", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-08-13T12:39:22.377281Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security@ubuntu.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 9.9, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 6.0, "exploitabilityScore": 3.1}]}, "affected": [{"source": "security@ubuntu.com", "affectedData": [{"repo": "https://github.com/canonical/lxd", "vendor": "Canonical", "product": "LXD", "versions": [{"status": "affected", "version": "4.0.0", "lessThan": "4.0.12", "versionType": "semver"}, {"status": "affected", "version": "5.0.0", "lessThan": "5.0.8", "versionType": "semver"}, {"status": "affected", "version": "5.21.0", "lessThan": "5.21.6", "versionType": "semver"}, {"status": "affected", "version": "6.0", "lessThan": "6.10", "versionType": "semver"}], "platforms": ["Linux"], "packageName": "LXD", "defaultStatus": "unaffected"}]}], "published": "2026-08-12T20:17:47.060", "references": [{"url": "https://github.com/canonical/lxd/security/advisories/GHSA-j825-cg34-5fr5", "tags": ["Vendor Advisory", "Exploit"], "source": "security@ubuntu.com"}, {"url": "https://github.com/canonical/lxd/security/advisories/GHSA-j825-cg34-5fr5", "tags": ["Vendor Advisory", "Exploit"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security@ubuntu.com", "description": [{"lang": "en", "value": "CWE-59"}]}], "descriptions": [{"lang": "en", "value": "A link following vulnerability in LXD allows an attacker to achieve arbitrary file read and write operations on the host system. When importing or unpacking an image archive, LXD fails to validate whether the metadata.yaml file is a symbolic link. An attacker can exploit this flaw by providing a crafted image archive with a symlinked metadata.yaml file pointing to target file paths on the host system."}, {"lang": "es", "value": "Una vulnerabilidad de seguimiento de enlaces en LXD permite a un atacante lograr operaciones arbitrarias de lectura y escritura de archivos en el sistema anfitri\u00f3n. Al importar o descomprimir un archivo de imagen, LXD no valida si el archivo metadata.yaml es un enlace simb\u00f3lico. Un atacante puede explotar esta falla al proporcionar un archivo de imagen especialmente dise\u00f1ado con un archivo metadata.yaml con enlace simb\u00f3lico que apunta a rutas de archivo de destino en el sistema anfitri\u00f3n."}], "lastModified": "2026-10-24T16:10:00.153", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:canonical:lxd:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "89DC62EE-69CD-4ACD-BB83-6A0635AC341C", "versionEndExcluding": "4.0.12", "versionStartIncluding": "4.0.0"}], "operator": "OR"}]}], "sourceIdentifier": "security@ubuntu.com"}