CVE-2026-55700
pnpm: stage download writes outside destination via manifest version traversal
CVSS Score
7.1
EPSS Score
0.0%
EPSS Percentile
0th
pnpm is a package manager. From 11.3.0 until 11.5.3, `pnpm stage download` derived a local filename from registry-controlled package name and version fields. A crafted manifest could escape the selected download directory and overwrite another reachable file. The merged fix validates both fields, derives one safe filename, and verifies the final destination before writing. This vulnerability is fixed in 11.5.3.
| CWE | CWE-22 CWE-73 |
| Vendor | pnpm |
| Product | pnpm |
| Published | Jun 25, 2026 |
| Last Updated | Jun 25, 2026 |
Stay Ahead of the Next One
Get instant alerts for pnpm pnpm
Be the first to know when new high vulnerabilities affecting pnpm pnpm are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
Low
Affected Versions
pnpm / pnpm
>= 11.3.0, < 11.5.3