Vulnerability DatabaseCVE-2026-19589
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CVE-2026-19589
Published:August 17, 2026
Updated:September 01, 2026
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 Packages
https://github.com/hashicorp/packer.git (GITHUB):
Affected version(s) >=v1.7.0 <v1.16.0
Fix Suggestion:
Update to version v1.16.0
github.com/hashicorp/packer (GO):
Affected version(s) >=v0.0.0-20130323074125-1748ca31f66e <v1.16.0
Fix Suggestion:
Update to version v1.16.0
Related Resources (4)
https://github.com/hashicorp/packer
https://nvd.nist.gov/vuln/detail/CVE-2026-19589
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/19xxx/CVE-2026-19589.json
https://discuss.hashicorp.com/t/hcsec-2026-29-packer-vulnerable-to-arbitrary-file-write-via-crafted-plugin-archive-during-installation/77654
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CVSS v4
Base Score:
8.2
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
LOW
Subsequent System Integrity
HIGH
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.1
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-22
EPSS
Base Score:
0.14