Windows
CVE-2026-24131
MEDIUM
GHSA-v253-rj99-jwpq
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Primary rating from GitHub Advisory.
CVSS VectorGitHub Advisory
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Lifecycle Timeline
4DescriptionGitHub Advisory
pnpm is a package manager. Prior to version 10.28.2, when pnpm processes a package's directories.bin field, it uses path.join() without validating the result stays within the package root. A malicious npm package can specify "directories": {"bin": "../../../../tmp"} to escape the package directory, causing pnpm to chmod 755 files at arbitrary locations. This issue only affects Unix/Linux/macOS. Windows is not affected (fixBin gated by EXECUTABLE_SHEBANG_SUPPORTED). Version 10.28.2 contains a patch.
AnalysisAI
pnpm versions before 10.28.2 fail to validate the directories.bin field during package processing, allowing malicious packages to use path traversal (e.g., ../../../../tmp) to escape the package root and chmod 755 files at arbitrary locations on Unix-like systems. Public exploit code exists for this vulnerability. The issue affects Linux, macOS, and Node.js environments but not Windows due to platform-specific protections.
Technical ContextAI
Classified as CWE-22 (Path Traversal). Affects Pnpm. pnpm is a package manager. Prior to version 10.28.2, when pnpm processes a package's directories.bin field, it uses path.join() without validating the result stays within the package root. A malicious npm package can specify "directories": {"bin": "../../../../tmp"} to escape the package directory, causing pnpm to chmod 755 files at arbitrary locations. This issue only affects Unix/Linux/macOS. Windows is not affected (fixBin gated by EXECUTABLE_SHEBANG_SUPPORTED). Version 10.28.2 cont
RemediationAI
A vendor patch is available — apply it immediately. Validate and sanitize file path inputs. Use allowlists.
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View allVendor StatusVendor
SUSE
Severity: MediumShare
External POC / Exploit Code
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