CVE-2026-19589 | BDVDB-2026-360442 Detail

HashiCorpPacker

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.

Impact#

CAPEC-23: File Content Injection

Weaknesses#

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

References#

https://discuss.hashicorp.com/t/hcsec-2026-29-packer-vulnerable-to-arbitrary-file-write-via-crafted-plugin-archive-during-installation/77654

Exploit#

No public exploit known

History#

Version 12026-08-17Record published in the CVE List.

Published

Published: 2026-08-17
Last modified: 2026-08-17

Vendor information

Vendor: HashiCorp
Product: Packer

All HashiCorp vulnerabilities

Score

7.1 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 9.2.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Path Traversal

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
>= 1.7.0 and < 1.16.0
Fixed
1.16.0

Scoring System

CVSS v4.0

Not available

CVSS v3.1

7.1 High

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

Metric breakdown
Attack Vector	Local
Attack Complexity	Low
Privileges Required	None
User Interaction	Required
Scope	Changed
Confidentiality	Low
Integrity	High
Availability	None

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).