CVE-2026-19589

{"id": "CVE-2026-19589", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-19589", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-17T20:46:35.455178Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security@hashicorp.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 7.1, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 4.7, "exploitabilityScore": 1.8}]}, "affected": [{"source": "security@hashicorp.com", "affectedData": [{"repo": "https://github.com/hashicorp/packer", "vendor": "HashiCorp", "product": "Packer", "versions": [{"status": "affected", "version": "1.7.0", "lessThan": "1.16.0", "versionType": "semver"}], "platforms": ["64 bit", "32 bit", "x86", "ARM", "MacOS", "Windows", "Linux"], "defaultStatus": "unaffected"}]}], "published": "2026-08-17T21:16:43.593", "references": [{"url": "https://discuss.hashicorp.com/t/hcsec-2026-29-packer-vulnerable-to-arbitrary-file-write-via-crafted-plugin-archive-during-installation/77654", "source": "security@hashicorp.com"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "security@hashicorp.com", "description": [{"lang": "en", "value": "CWE-22"}]}], "descriptions": [{"lang": "en", "value": "Packer up to 1.15.4 is vulnerable to an issue in the third-party plugin installer that may allow unintended file system modification and could lead to code execution. A user who installs a plugin from a malicious or compromised source may be affected. This vulnerability (CVE-2026-19589) is fixed in Packer 1.16.0."}], "lastModified": "2026-08-28T15:47:00.217", "sourceIdentifier": "security@hashicorp.com"}