CVE-2026-23890
pnpm scoped bin name Path Traversal allows arbitrary file creation outside node_modules/.bin
- State
- Published
- Severity
- 6.5 Medium
- Published
- Jan 26, 2026
- Updated
- Jan 27, 2026
- Reserved
- Jan 16, 2026
Description
pnpm is a package manager. Prior to version 10.28.1, a path traversal vulnerability in pnpm's bin linking allows malicious npm packages to create executable shims or symlinks outside of `node_modules/.bin`. Bin names starting with `@` bypass validation, and after scope normalization, path traversal sequences like `../../` remain intact. This issue affects all pnpm users who install npm packages and CI/CD pipelines using pnpm. It can lead to overwriting config files, scripts, or other sensitive files. Version 10.28.1 contains a patch.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.5 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N | GitHub_M |
Weaknesses
- CWE-23 Relative Path Traversal
Affected Products
| Product | Versions |
|---|---|
pnpmpnpm |
|
References
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