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CVE-2026-107347— Nomad dispatch payload writes can escape the allocation directory through symlinks

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 Nomad Enterprise 存在符号链接跟随漏洞，该漏洞发生在分发负载（dispatch payload）和执行器日志写入过程中，可能导致恶意工作负载修改其分配目录之外的文件。当客户端代理以 root 用户身份运行时，此漏洞可能攻击者在客户端主机上以 root 权限执行代码。该漏洞（CVE-2026-107347）已在 Nomad 2.1.0、Nomad Enterprise 2.1.0、1.11.12 和 1.10.18 版本中得到修复。

CVSS 8.4 · High

Affected Version Matrix 2

VendorProduct Version RangeStatus
HashiCorp Nomad 0.3.0< 2.1.0 affected
HashiCorp Nomad Enterprise 0.3.0< 2.1.0 affected
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I. Basic Information for CVE-2026-107347

Vulnerability Information
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Vulnerability Title
Nomad dispatch payload writes can escape the allocation directory through symlinks
Source: CVE Program / CVE List V5
Vulnerability Description
HashiCorp Nomad and Nomad Enterprise are vulnerable to symlink following during dispatch payload and executor log writes that may allow a malicious workload to modify files outside its allocation directory. When the client agent runs as root, this could lead to code execution as root on the client host. This vulnerability (CVE-2026-107347) is fixed in Nomad 2.1.0 and Nomad Enterprise 2.1.0, 1.11.12, and 1.10.18.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H
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

Affected Products

Vendor Product Affected Versions CPE Subscribe
HashiCorp Nomad 0.3.0 ~ 2.1.0 -
HashiCorp Nomad Enterprise 0.3.0 ~ 2.1.0 -

II. Public POCs for CVE-2026-107347

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III. Intelligence Information for CVE-2026-107347

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Other References for CVE-2026-107347 (1)

Same Patch Batch · HashiCorp · 2026-10-29 · 4 CVEs total

CVE-2026-119168 8.8 HIGH Nomad allocation data migration may allow host directory permission modification via symli
CVE-2026-13303 8.7 HIGH Boundary vulnerable to server-side request forgery in Vault credential store
CVE-2026-102260 4.3 MEDIUM Nomad vulnerable to cross-namespace information disclosure in multiple endpoints

IV. Related Vulnerabilities

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