CVE-2026-40226

{"id": "CVE-2026-40226", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "cve@mitre.org", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.4, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "HIGH", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 0.5}]}, "published": "2026-04-10T16:16:33.447", "references": [{"url": "https://github.com/systemd/systemd/security/advisories/GHSA-9mj4-rrc3-gjcx", "tags": ["Vendor Advisory"], "source": "cve@mitre.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "cve@mitre.org", "description": [{"lang": "en", "value": "CWE-348"}]}], "descriptions": [{"lang": "en", "value": "In nspawn in systemd 233 through 259 before 260, an escape-to-host action can occur via a crafted optional config file."}], "lastModified": "2026-04-17T22:02:15.393", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:systemd_project:systemd:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "29AAD5A6-4198-4D58-9FBB-FE35AFADA909", "versionEndExcluding": "257.12", "versionStartIncluding": "233"}, {"criteria": "cpe:2.3:a:systemd_project:systemd:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CDEB656F-DF55-418A-A250-E414B7DFF975", "versionEndExcluding": "258.6", "versionStartIncluding": "258"}, {"criteria": "cpe:2.3:a:systemd_project:systemd:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2D35ABE2-6825-4820-96FA-37601DA85848", "versionEndExcluding": "259.4", "versionStartIncluding": "259"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}