CVE-2026-19589: Hashicorp Packer

High severity, CVSS 7.1. EPSS: 0.2% chance of exploitation in the next 30 days.

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 products

• Hashicorp Packer: from 1.7.0, before 1.16.0 (fixed in 1.16.0)

Published 2026-08-17. Last modified 2026-08-28.