SB2026080360 - Path traversal in pnpm

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2026080360

SB2026080360 - Path traversal in pnpm

Published: August 3, 2026

Security Bulletin ID SB2026080360
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Path traversal (CVE-ID: N/A)

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to modify files outside the intended project directory.

The vulnerability exists due to path traversal in pacquet trust-lockfile install handling when processing a crafted lockfile alias during installation. A remote attacker can supply a crafted lockfile that causes dependency symlinks to be created outside the intended project or node_modules boundary to modify files outside the intended project directory.

User interaction is required to run installation with --trust-lockfile or a frozen lockfile.


Remediation

Install update from vendor's website.

References