CVE-2026-24131Public exploit

File disclosure via directories.bin path traversal

Published Jan 26, 2026 · Updated Jan 26, 2026

Path traversal in pnpm before 10.28.2 allows context-dependent attackers to make arbitrary non-dotfiles world-readable during package installation. The getBinsFromPackageManifest function joins an untrusted directories.bin value to the package path without verifying that the result remains beneath the package root, then enumerates matching files and sets mode 755. Exploitation requires installation of a malicious package on Linux or macOS; Windows is unaffected, and the demonstrated consequence is unauthorized file disclosure rather than file-content modification.

CVSS severity6.7
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in pnpm before 10.28.2 allows context-dependent attackers to make arbitrary non-dotfiles world-readable during package installation. The getBinsFromPackageManifest function joins an untrusted directories.bin value to the package path without verifying that the result remains beneath the package root, then enumerates matching files and sets mode 755. Exploitation requires installation of a malicious package on Linux or macOS; Windows is unaffected, and the demonstrated consequence is unauthorized file disclosure rather than file-content modification.

The record

CVE
CVE-2026-24131
Published
Jan 26, 2026
Updated
Jan 26, 2026
Vendor
pnpm
Product
pnpm
Classifications
CWE-22, CWE-732, T1222.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 10.28.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

pnpm · pnpmversion=< 10.28.2

Published CVSS scores

6.7GitHub, Inc.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
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-732Incorrect Permission Assignment for Critical Resource
T1222.002Linux and Mac File and Directory Permissions Modification

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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