Improper Resolution of Path Equivalence in pnpm - #VU153379
Published: October 6, 2026
Vulnerability identifier: #VU153379
CSH Severity: Low
CVSS v4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-41
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to make distinct dependencies share a virtual store directory.
The vulnerability exists due to improper resolution of path equivalence in virtual store directory naming when deriving directory names for URL or local path dependencies. A local user can supply dependency references that differ by +, #, :, or ? in one reference and / in another to make distinct dependencies share a virtual store directory.
Git dependencies pinned with # are also subject to these directory-name collisions.
Affected software
pnpm
Remediation
Install security update from vendor's website.
pnpm - update to 12.10.0