Pnpm
CVE-2026-24131
MEDIUM
GHSA-v253-rj99-jwpq
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V5 - File Handling Path canonicalization, traversal prevention
MITRE ATT&CK
2 techniques across 2 tactics: Discovery, Collection The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS 5.5 (MEDIUM). Attack vector: Local. Complexity: Low. Privileges required: Low. User interaction: None. Public exploit/POC available. |
| Exploit ScenarioDerived | An attacker could exploit this vulnerability to compromise the affected system. |
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Alert meAnalysisAIv1 – Mar 12, 2026
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.
Earlier versions of this analysis (1)
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. [CVSS 5.5 MEDIUM]
RemediationAI
A vendor patch is available — apply it immediately. Validate and sanitize file path inputs. Use allowlists.
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in npm
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
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
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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
Lifecycle Timeline
3DescriptionGitHub 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.
Executive ViewAI
Organizations using pnpm should be aware of moderate risk from CVE-2026-24131, a path traversal vulnerability rated CVSS 5.5. This could allow unauthorized file access. Proof-of-concept code is publicly available. A patch is available and should be applied during regular vulnerability management.
Apply vendor patch. If patching is delayed: restrict file access via WAF, implement allowlists.
Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Affected Products (CPE)GitHub Advisory
Arbitrary code execution in the pnpm package manager (versions 10.0.0 through 10.25) lets a git-hosted dependency run co
pnpm is a package manager. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentica
Path traversal in pnpm before 10.34.0 and 11.4.0 lets a malicious registry package smuggle '../' segments inside a trans
Arbitrary code execution in the pnpm package manager (versions prior to 10.34.2 and 11.5.3) lets a malicious repository
Arbitrary command execution in pnpm before 10.34.2 and 11.5.3 allows a malicious repository to run attacker-chosen nativ
Supply-chain integrity bypass in pnpm package manager (versions ≤10.26.2, per description; GHSA states <10.26.0) allows
PNPM v6.15.1 and below was discovered to contain an untrusted search path which causes the application to behave in unex
Integrity-check bypass in the pnpm package manager (versions before 10.34.0/10.34.1 and 11.0.0-11.3.x) lets tampered pac
Command injection in pnpm versions 6.25.0 through 10.26.2 allows attackers controlling environment variables to execute
Scoped path traversal in pnpm allows arbitrary filesystem overwrites during package installation, defeating the --ignore
Arbitrary file write and deletion in pnpm package manager (versions prior to 10.34.0 and 11.4.0) lets a malicious contri
Arbitrary command execution in pnpm before 10.34.0 and 11.4.0 allows a malicious lockfile to run code on a developer's m
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