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CVE-2026-101043— pnpm 11.0.0 before 11.11.0 Environment Variable Exfiltration via Proxy Settings

Quick assessment

Affected
pnpm pnpm
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.

pnpm 11.0.0 至 11.10.0 以及 10.7.0 至 10.34.4 版本存在漏洞。在这些版本中，pnpm 会从项目的 配置文件中读取 、 和 设置，并对其中包含的 环境变量占位符进行展开。 由于该配置文件由仓库控制，而 、 和 相关的配置键未被列入“抑制占位符展开”的目标键集合中（该机制已应用于 、 、 和 等键），因此，攻击者若能控制某个仓库的 文件，便可能诱导其他用户克隆该仓库并执行 pnpm 命令（例如 ）。在此过程中，攻击者可利用环境中的敏感信息（如 或 ）将其展开为代理主机名或用户认证信息

CVSS 7.4 · High
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I. Basic Information for CVE-2026-101043

Vulnerability Information
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Vulnerability Title
pnpm 11.0.0 before 11.11.0 Environment Variable Exfiltration via Proxy Settings
Source: CVE Program / CVE List V5
Vulnerability Description
pnpm versions 11.0.0 before 11.11.0 and 10.7.0 before 10.34.5 expand ${VAR} environment-variable placeholders in the httpProxy, httpsProxy, and noProxy settings read from a project's pnpm-workspace.yaml. Because the manifest is repository-controlled and the proxy keys were omitted from the request-destination key set that otherwise suppresses placeholder expansion for untrusted manifests (as already done for registry, pnprServer, registries and namedRegistries), an attacker who controls a repository's pnpm-workspace.yaml can cause a victim who clones the repository and runs a pnpm command (e.g. pnpm install) to expand environment secrets such as NPM_TOKEN or GITHUB_TOKEN into a proxy hostname or userinfo and route install traffic — and the corresponding DNS lookups — through an attacker-controlled host. The exfiltration occurs during configuration loading, before any lifecycle script executes. Fixed in pnpm 11.11.0 and 10.34.5.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过发送数据的信息暴露
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
pnpm pnpm 11.0.0 ~ 11.11.0 -
pnpm pnpm 10.7.0 ~ 10.34.5 -

II. Public POCs for CVE-2026-101043

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III. Intelligence Information for CVE-2026-101043

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Vendor Advisories for CVE-2026-101043 (1)

Other References for CVE-2026-101043 (1)

IV. Related Vulnerabilities

Same product: pnpm
Same vendor: pnpm
Same weakness: CWE-201

V. Comments for CVE-2026-101043

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