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CVE-2026-23889
6.5 MEDIUM
- CVSS version: 3.1
- Attack vector (AV): NETWORK
- Attack complexity (AC): LOW
- Privileges required (PR): NONE
- User interaction (UI): REQUIRED
- Scope (S): UNCHANGED
- Confidentiality impact (C): NONE
- Integrity impact (I): HIGH
- Availability impact (A): NONE
by @LeSuisse Activity log
- Created automatic suggestion
- @LeSuisse removed package pnpm-shell-completion
- @LeSuisse dismissed
pnpm has Windows-specific tarball Path Traversal
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
- https://github.com/pnpm/pnpm/security/advisories/GHSA-6x96-7vc8-cm3p x_refsource_CONFIRM
- https://github.com/pnpm/pnpm/commit/6ca07ffbe6fc0e8b8cdc968f228903ba0886f7c0 x_refsource_MISC
- https://github.com/pnpm/pnpm/releases/tag/v10.28.1 x_refsource_MISC
- https://github.com/pnpm/pnpm/security/advisories/GHSA-6x96-7vc8-cm3p x_refsource_CONFIRM
- https://github.com/pnpm/pnpm/commit/6ca07ffbe6fc0e8b8cdc968f228903ba0886f7c0 x_refsource_MISC
- https://github.com/pnpm/pnpm/releases/tag/v10.28.1 x_refsource_MISC
Affected products
pnpm
- ==< 10.28.1
Package maintainers
-
@gepbird Gutyina Gergő <gutyina.gergo.2@gmail.com>
-
@Scrumplex Sefa Eyeoglu <contact@scrumplex.net>