{"id":"CVE-2026-19589","state":"PUBLISHED","title":"Packer vulnerable to arbitrary file write via crafted plugin archive during installation","description":"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.","publishedAt":"2026-08-17T20:22:19.057Z","updatedAt":"2026-08-17T20:46:47.743Z","severity":{"score":7.1,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N","source":"HashiCorp"},"assigner":"HashiCorp","products":["HashiCorp Packer"],"affected":[{"vendor":"HashiCorp","product":"Packer","defaultStatus":"unaffected","versions":[{"version":"1.7.0","status":"affected","lessThan":"1.16.0","versionType":"semver"}],"platforms":["64 bit","32 bit","x86","ARM","MacOS","Windows","Linux"],"repo":"https://github.com/hashicorp/packer"}],"references":["https://discuss.hashicorp.com/t/hcsec-2026-29-packer-vulnerable-to-arbitrary-file-write-via-crafted-plugin-archive-during-installation/77654"],"weaknesses":["CWE-22"],"ingestedAt":"2026-10-29T20:11:10.572Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/19xxx/CVE-2026-19589.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-19589","state":"PUBLISHED","datePublished":"2026-08-17T20:22:19.057Z","dateUpdated":"2026-08-17T20:46:47.743Z","assignerShortName":"HashiCorp","assignerOrgId":"67fedba0-ff2e-4543-ba5b-aa93e87718cc","dateReserved":"2026-08-12T03:40:41.141Z"},"containers":{"cna":{"title":"Packer vulnerable to arbitrary file write via crafted plugin archive during installation","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."}],"affected":[{"vendor":"HashiCorp","product":"Packer","defaultStatus":"unaffected","versions":[{"version":"1.7.0","status":"affected","lessThan":"1.16.0","versionType":"semver"}],"platforms":["64 bit","32 bit","x86","ARM","MacOS","Windows","Linux"],"repo":"https://github.com/hashicorp/packer"}],"references":[{"url":"https://discuss.hashicorp.com/t/hcsec-2026-29-packer-vulnerable-to-arbitrary-file-write-via-crafted-plugin-archive-during-installation/77654"}],"metrics":[{"cvssV3_1":{"baseScore":7.1,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-22","description":"CWE-22: Improper Limitation of a Pathname to a Restricted Directory (Path Traversal)","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"HashiCorp","orgId":"67fedba0-ff2e-4543-ba5b-aa93e87718cc","dateUpdated":"2026-08-17T20:22:19.057Z"},"credits":[{"lang":"en","value":"This issue was reported to HashiCorp by George Chen."}],"impacts":[{"capecId":"CAPEC-23","descriptions":[{"lang":"en","value":"CAPEC-23: File Content Injection"}]}],"source":{"advisory":"HCSEC-2026-29","discovery":"EXTERNAL"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-17T20:46:35.455178Z","id":"CVE-2026-19589","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-17T20:46:47.743Z"}}]}}}