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CVE-2026-24131— pnpm has Path Traversal via arbitrary file permission modification

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是pnpm开源的一个包管理器。 pnpm 10.28.2之前版本存在安全漏洞，该漏洞源于处理包的directories.bin字段时未验证路径，可能导致恶意npm包在Unix/Linux/macOS系统上修改任意位置文件的权限。

AI Predicted 7.8 Difficulty: Moderate EPSS 0.28% · P18

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2026-24131

Vulnerability Information
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Vulnerability Title
pnpm has Path Traversal via arbitrary file permission modification
Source: CVE Program / CVE List V5
Vulnerability Description
pnpm is a package manager. Prior to version 10.28.2, when pnpm processes a package's `directories.bin` field, it uses `path.join()` without validating the result stays within the package root. A malicious npm package can specify `"directories": {"bin": "../../../../tmp"}` to escape the package directory, causing pnpm to chmod 755 files at arbitrary locations. This issue only affects Unix/Linux/macOS. Windows is not affected (`fixBin` gated by `EXECUTABLE_SHEBANG_SUPPORTED`). Version 10.28.2 contains a patch.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA: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
pnpm 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
pnpm是pnpm开源的一个包管理器。 pnpm 10.28.2之前版本存在安全漏洞，该漏洞源于处理包的directories.bin字段时未验证路径，可能导致恶意npm包在Unix/Linux/macOS系统上修改任意位置文件的权限。
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
pnpm pnpm < 10.28.2 -

II. Public POCs for CVE-2026-24131

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III. Intelligence Information for CVE-2026-24131

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Vendor Advisories for CVE-2026-24131 (1)

Same Patch Batch · pnpm · 2026-01-26 · 5 CVEs total

CVE-2026-23890 6.5 MEDIUM pnpm scoped bin name Path Traversal allows arbitrary file creation outside node_modules/.b
CVE-2026-23888 6.5 MEDIUM pnpm: Binary ZIP extraction allows arbitrary file write via path traversal (Zip Slip)
CVE-2026-23889 6.5 MEDIUM pnpm has Windows-specific tarball Path Traversal
CVE-2026-24056 pnpm has symlink traversal in file:/git dependencies

IV. Related Vulnerabilities

Same product: pnpm
Same vendor: pnpm
Same weakness: CWE-22

V. Comments for CVE-2026-24131

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