CVE-2026-19589 — HIGH (7.1)

Vulnerability 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.

CVSS Score

7.1

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality

LOW

Integrity

HIGH

Availability

NONE

Related Weaknesses (CWE)

CWE-22

References

https://discuss.hashicorp.com/t/hcsec-2026-29-packer-vulnerable-to-arbitrary-fil

FAQ

What is CVE-2026-19589?

CVE-2026-19589 is a vulnerability with a CVSS score of 7.1 (HIGH). 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...

How severe is CVE-2026-19589?

CVE-2026-19589 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-19589?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.