File System Modification Risk in Packer by HashiCorp
CVE-2026-19589

7.1HIGH

Key Information:

Vendor

Hashicorp
Status
Packer
Vendor
CVE Published:
17 August 2026

What is CVE-2026-19589?

Packer, developed by HashiCorp, is affected by a vulnerability in its third-party plugin installer. This flaw can enable unintended modifications to the file system, potentially allowing code execution if a user installs a plugin from a non-trustworthy or compromised source. Users are advised to upgrade to Packer version 1.16.0 or later to mitigate this risk and enhance their security posture.

Affected Version(s)

Packer 64 bit 1.7.0 < 1.16.0

References

https://discuss.hashicorp.com/t/hcsec-2026-29-packer-vuln...

CVSS V3.1

Score:
7.1
Severity:
HIGH
Confidentiality:
Low
Integrity:
High
Availability:
Low
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

This issue was reported to HashiCorp by George Chen.
.