← Vulnerability feed

Vulnerability record · CVE-2026-23888 · published 26 January 2026

CVE-2026-23888: Pnpm path traversal vulnerability

Pnpm · Pnpm

pnpm is a package manager. Prior to version 10.28.1, a path traversal vulnerability in pnpm's binary fetcher allows malicious packages to write files outside the intended extraction directory. The vulnerability has two attack vectors: (1) Malicious ZIP entries containing `../` or absolute paths that escape the extraction root via AdmZip's `extractAllTo`, and (2) The `BinaryResolution.prefix` field is concatenated into the extraction path without validation, allowing a crafted prefix like `../../evil` to redirect extracted files outside `targetDir`. The issue impacts all pnpm users who install packages with binary assets, users who configure custom Node.js binary locations and CI/CD pipelines that auto-install binary dependencies. It can lead to overwriting config files, scripts, or other sensitive files leading to RCE. Version 10.28.1 contains a patch.

6.5 CVSS 3.1 Medium EPSS 0.46% · top 61.9% CWE-22 · Path traversalCWE-23 · Relative path traversal
6.5CVSS 3.1 base score
0.46%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References, 1 tagged exploit
17 Jun 2026Last modified by NVD

Description

pnpm is a package manager. Prior to version 10.28.1, a path traversal vulnerability in pnpm's binary fetcher allows malicious packages to write files outside the intended extraction directory. The vulnerability has two attack vectors: (1) Malicious ZIP entries containing `../` or absolute paths that escape the extraction root via AdmZip's `extractAllTo`, and (2) The `BinaryResolution.prefix` field is concatenated into the extraction path without validation, allowing a crafted prefix like `../../evil` to redirect extracted files outside `targetDir`. The issue impacts all pnpm users who install packages with binary assets, users who configure custom Node.js binary locations and CI/CD pipelines that auto-install binary dependencies. It can lead to overwriting config files, scripts, or other sensitive files leading to RCE. Version 10.28.1 contains a patch.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/pnpm/pnpm/commit/5c382f0ca3b7cc49963b94677426e66539dcb3f5 Patch
https://github.com/pnpm/pnpm/releases/tag/v10.28.1 Release Notes
https://github.com/pnpm/pnpm/security/advisories/GHSA-6pfh-p556-v868 ExploitVendor Advisory

Track CVE-2026-23888 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2025-69264Pnpm vulnerabilitypnpm is a package manager. Versions 10.0.0 through 10.25 allow git-hosted dependencies to execute arbitrary code during pnpm install, circumventing t…EPSS 1.0%9.8CVE-2023-37478Pnpm improper access control vulnerabilitypnpm is a package manager. It is possible to construct a tarball that, when installed via npm or parsed by the registry is safe, but when installed v…EPSS 1.2%8.8CVE-2026-55487Pnpm origin validation error vulnerabilitypnpm is a package manager. Prior to 10.34.2 and 11.5.3, the generic peer-suffix normalizer also stripped parenthesized text from git, URL, tarball, f…EPSS 0.18%8.8CVE-2026-55697Pnpm os command injection vulnerabilitypnpm is a package manager. Prior to 10.34.2 and 11.5.3, pnpm can install configDependencies declared in pnpm-workspace.yaml before command dispatch. …EPSS 0.19%8.8CVE-2026-55698Pnpm insufficient verification of data authenticity vulnerabilitypnpm is a package manager. Prior to 10.34.2 and 11.5.3, pnpm can persist package-manager bootstrap metadata in the first YAML document of pnpm-lock.y…EPSS 0.30%8.8CVE-2026-50016Pnpm relative path traversal vulnerabilitypnpm is a package manager. Prior to 10.34.0 and 11.4.0, pnpm allows a transitive dependency alias from registry package metadata to contain path trav…EPSS 0.53%8.8CVE-2025-69263Pnpm download of code without integrity check vulnerabilitypnpm is a package manager. Versions 10.26.2 and below store HTTP tarball dependencies (and git-hosted tarballs) in the lockfile without integrity has…EPSS 0.48%8.8CVE-2022-26183Pnpm untrusted search path vulnerabilityPNPM v6.15.1 and below was discovered to contain an untrusted search path which causes the application to behave in unexpected ways when users execut…EPSS 1.6%

Source: NIST National Vulnerability Database (record CVE-2026-23888), CISA KEV, FIRST EPSS (scores of 2026-10-12). This page is refreshed as NVD updates the record.