CVE-2026-55700CWE-22CWE-73
pnpm: stage download writes outside destination via manifest version traversal
High · published June 25, 2026
What it is
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.
The record
Technical detail
- CVSS v3.1
- 7.1 · HIGH
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:L
- CVSS v4.0
- Not supplied
- EPSS
- 0.00417 · 34.9th percentile
- Weaknesses
- CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'); CWE-73 · External Control of File Name or Path
- Published
- 2026-06-25T16:47Z
EPSS history
Timeline