{"id":"CVE-2026-19589","aliases":["AZL-96603","EUVD-2026-60378","GHSA-3cf4-f9v4-j353"],"status":"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.","severity":{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00194,"percentile":0.09193,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-22"],"published":"2026-08-17T20:22:19Z","modified":"2026-11-05T05:40:51Z","fixes":[{"ecosystem":"Azure Linux:3","package":"packer","fixed_in":["1.9.5-20"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Azure Linux:3","package":"packer","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.9.5-20"}]}]}],"products":[{"vendor":"hashicorp","product":"packer"},{"vendor":"microsoft","product":"packer"}],"references":[{"url":"https://discuss.hashicorp.com/t/hcsec-2026-29-packer-vulnerable-to-arbitrary-file-write-via-crafted-plugin-archive-during-installation/77654","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-19589","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-3cf4-f9v4-j353"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/19xxx/CVE-2026-19589.json","tags":["advisory"]},{"url":"https://github.com/hashicorp/packer","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-19589","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.","status":"published","published":"2026-08-17T20:22:19.057Z","modified":"2026-08-17T20:46:47.743Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T13:47:28.691429Z"}],"euvd":[{"id":"EUVD-2026-60378","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.","status":"published","published":"2026-08-17T20:22:19Z","modified":"2026-08-17T20:46:47Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T18:01:48.026284Z"}],"ghsa":[{"id":"GHSA-3cf4-f9v4-j353","title":"Packer up to 1.15.4 is vulnerable to an issue in the third-party plugin installer that may allow...","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.","status":"published","published":"2026-08-17T21:31:24Z","modified":"2026-08-17T21:31:30Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N","level":"high"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T15:10:35.189726Z"}],"nvd":[{"id":"CVE-2026-19589","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.","status":"published","published":"2026-08-17T21:16:43.593Z","modified":"2026-10-23T16:10:00.313Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T14:12:38.647684Z"}],"osv":[{"id":"CVE-2026-19589","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.","status":"published","published":"2026-08-17T20:22:19.057Z","modified":"2026-10-28T02:30:53.786906003Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N","level":"high"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T15:44:58.024074Z"},{"id":"AZL-96603","title":"CVE-2026-19589 affecting package packer for versions less than 1.9.5-20","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.","status":"published","published":"2026-08-17T21:16:43Z","modified":"2026-11-05T05:40:51Z","updated_at":"2026-11-05T16:41:26.077208Z"}]}}