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CVE-2026-6959— Nomad vulnerable to arbitrary file read/write on client host through symlink attack

Quick assessment

Affected
HashiCorp Nomad
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 Nomad和HashiCorp Nomad Enterprise都是美国HashiCorp公司的产品。HashiCorp Nomad是一个简单灵活的调度器和编排器。用于在本地和云中大规模管理容器和非容器化应用程序。HashiCorp Nomad Enterprise是一个 Nomad 软件的专业版。 HashiCorp Nomad和HashiCorp Nomad Enterprise 2.0.1之前版本存在后置链接漏洞，该漏洞源于通过符号链接攻击可能导致任意文件读取和写入。

CVSS 6.0 · Medium EPSS 0.17% · P7

Affected Version Matrix 2

VendorProduct Version RangeStatus
HashiCorp Nomad 0.9.0< 2.0.1 affected
HashiCorp Nomad Enterprise 0.9.0< 2.0.1 affected
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I. Basic Information for CVE-2026-6959

Vulnerability Information
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Vulnerability Title
Nomad vulnerable to arbitrary file read/write on client host through symlink attack
Source: CVE Program / CVE List V5
Vulnerability Description
HashiCorp Nomad and Nomad Enterprise prior to 2.0.1 are vulnerable to arbitrary file read and write on the client host as the Nomad process user through a symlink attack. This vulnerability (CVE-2026-6959) is fixed in Nomad 2.0.1, 1.11.5 and 1.10.11.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在文件访问前对链接解析不恰当(链接跟随)
Source: CVE Program / CVE List V5
Vulnerability Title
HashiCorp Nomad和HashiCorp Nomad Enterprise 后置链接漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
HashiCorp Nomad和HashiCorp Nomad Enterprise都是美国HashiCorp公司的产品。HashiCorp Nomad是一个简单灵活的调度器和编排器。用于在本地和云中大规模管理容器和非容器化应用程序。HashiCorp Nomad Enterprise是一个 Nomad 软件的专业版。 HashiCorp Nomad和HashiCorp Nomad Enterprise 2.0.1之前版本存在后置链接漏洞，该漏洞源于通过符号链接攻击可能导致任意文件读取和写入。
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

Vendor Product Affected Versions CPE Subscribe
HashiCorp Nomad 0.9.0 ~ 2.0.1 -
HashiCorp Nomad Enterprise 0.9.0 ~ 2.0.1 -

II. Public POCs for CVE-2026-6959

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III. Intelligence Information for CVE-2026-6959

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Vendor Advisories for CVE-2026-6959 (1)

Same Patch Batch · HashiCorp · 2026-05-12 · 4 CVEs total

CVE-2026-7474 8.8 HIGH Nomad vulnerable to path traversal in dynamic host volume which may lead to code execution
CVE-2026-8052 6.0 MEDIUM Nomad's exec2 task driver vulnerable to arbitrary file read/write on client host through s
CVE-2026-5061 4.7 MEDIUM Consul-template vulnerable to sandbox path bypass in file helper via a symlink attack

IV. Related Vulnerabilities

Same product: Nomad
Same vendor: HashiCorp
Same weakness: CWE-59

V. Comments for CVE-2026-6959

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