CVE-2026-19589— Packer vulnerable to arbitrary file write via crafted plugin archive during installation
Quick assessment
Affected
HashiCorp Packer
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
HashiCorp Packer是美国HashiCorp公司开源的一个自动化镜像构建工具。 HashiCorp Packer存在路径遍历漏洞，该漏洞源于第三方插件安装程序问题，可能导致非预期的文件系统修改和代码执行。
Possible ATT&CK Techniques 2 AI
T1059 · Command and Scripting Interpreter T1195.002 · Compromise Software Supply Chain
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I. Basic Information for CVE-2026-19589
Vulnerability Information
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Vulnerability Title
Packer vulnerable to arbitrary file write via crafted plugin archive during installation
Source: CVE Program / CVE List V5
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
HashiCorp Packer 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
HashiCorp Packer是美国HashiCorp公司开源的一个自动化镜像构建工具。 HashiCorp Packer存在路径遍历漏洞，该漏洞源于第三方插件安装程序问题，可能导致非预期的文件系统修改和代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-19589
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-19589 (1)
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