What is CVE-2026-19589?

CVE-2026-19589 is a high-severity vulnerability in Hashicorp Packer, classified under Path Traversal. CVSS score: 7.1/10. Published 2026-08-17.

How severe is CVE-2026-19589?

High severity. CVSS v3 base score is 7.1 out of 10.

Path Traversal in Hashicorp Packer

CVE-2026-19589

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.

Vulnerability class: Path Traversal (Directory Traversal)

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N.

Affected products

Hashicorp Packer — versions 1.7.0

Weakness classification (CWE)

CWE-22 — Path Traversal

References

security@hashicorp.com

Frequently asked questions

What is CVE-2026-19589?: CVE-2026-19589 is a high-severity vulnerability in Hashicorp Packer, classified under Path Traversal. CVSS score: 7.1/10. Published 2026-08-17.
How severe is CVE-2026-19589?: High severity. CVSS v3 base score is 7.1 out of 10.