Path traversal in pnpm - #VU140784
Published: August 3, 2026
Vulnerability identifier: #VU140784
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to path traversal in the isolated-linker import target when processing a tarball dependency with a crafted manifest name during installation. A remote attacker can supply a specially crafted tarball dependency to overwrite files outside node_modules and execute arbitrary code.
User interaction is required to run pnpm install, and exploitation can occur even when installation is performed with --ignore-scripts.
Affected software
pnpm
Remediation
Install security update from vendor's website.
pnpm - addressed in versions 10.34.5, 11.11.0