CVE-2026-18157

{"id": "CVE-2026-18157", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-18157", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-07-31T15:54:47.332670Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "secalert@redhat.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "affected": [{"source": "secalert@redhat.com", "affectedData": [{"vendor": "RedHatInsights", "product": "yggdrasil-worker-package-manager", "versions": [{"status": "affected", "version": "0", "lessThan": "0.1.4", "versionType": "semver"}, {"status": "affected", "version": "0.2.0", "lessThan": "0.2.4", "versionType": "semver"}], "packageName": "yggdrasil-worker-package-manager", "collectionURL": "https://github.com/RedHatInsights/yggdrasil-worker-package-manager", "defaultStatus": "unaffected"}, {"cpes": ["cpe:/o:redhat:enterprise_linux:10"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 10", "packageName": "yggdrasil-worker-package-manager", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}]}], "published": "2026-07-31T03:16:25.223", "references": [{"url": "https://access.redhat.com/security/cve/CVE-2026-18157", "source": "secalert@redhat.com"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2465250", "source": "secalert@redhat.com"}, {"url": "https://github.com/RedHatInsights/yggdrasil-worker-package-manager/commit/959745bb5917c17f0316af199aace6c71baa5ad7", "source": "secalert@redhat.com"}, {"url": "https://github.com/RedHatInsights/yggdrasil-worker-package-manager/releases/tag/0.1.4", "source": "secalert@redhat.com"}, {"url": "https://github.com/RedHatInsights/yggdrasil-worker-package-manager/releases/tag/0.2.4", "source": "secalert@redhat.com"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "secalert@redhat.com", "description": [{"lang": "en", "value": "CWE-88"}]}], "descriptions": [{"lang": "en", "value": "A flaw was found in yggdrasil-worker-package-manager. A local attacker with existing access to the system could exploit an argument injection vulnerability in the APT backend. This allows specially crafted package names, which begin with a hyphen, to be misinterpreted as command options by apt-get. Successful exploitation could lead to remote code execution (RCE) with root privileges, enabling the attacker to fully compromise the system's integrity, confidentiality, and availability."}], "lastModified": "2026-08-03T16:39:02.593", "sourceIdentifier": "secalert@redhat.com"}