pnpm is a package manager. Prior to version 10.28.1, a path traversal vulnerability in pnpm's tarball extraction allows malicious packages to write files outside the package directory on Windows. The path normalization only checks for `./` but not `.\`. On Windows, backslashes are directory separators, enabling path traversal. This vulnerability is Windows-only. This issue impacts Windows pnpm users and Windows CI/CD pipelines (GitHub Actions Windows runners, Azure DevOps). It can lead to overwriting `.npmrc`, build configs, or other files. Version 10.28.1 contains a patch.
References
| Link | Resource |
|---|---|
| https://github.com/pnpm/pnpm/commit/6ca07ffbe6fc0e8b8cdc968f228903ba0886f7c0 | Patch |
| https://github.com/pnpm/pnpm/releases/tag/v10.28.1 | Patch |
| https://github.com/pnpm/pnpm/security/advisories/GHSA-6x96-7vc8-cm3p | Exploit Vendor Advisory |
Configurations
Configuration 1 (hide)
| AND |
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History
28 Jan 2026, 17:33
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://github.com/pnpm/pnpm/commit/6ca07ffbe6fc0e8b8cdc968f228903ba0886f7c0 - Patch | |
| References | () https://github.com/pnpm/pnpm/releases/tag/v10.28.1 - Patch | |
| References | () https://github.com/pnpm/pnpm/security/advisories/GHSA-6x96-7vc8-cm3p - Exploit, Vendor Advisory | |
| CPE | cpe:2.3:a:pnpm:pnpm:*:*:*:*:*:node.js:*:* cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* |
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| First Time |
Pnpm pnpm
Microsoft windows Microsoft Pnpm |
26 Jan 2026, 22:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-01-26 22:15
Updated : 2026-01-28 17:33
NVD link : CVE-2026-23889
Mitre link : CVE-2026-23889
CVE.ORG link : CVE-2026-23889
JSON object : View
Products Affected
pnpm
- pnpm
microsoft
- windows
CWE
CWE-22
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')