pacquet before 12.0.0-alpha.5 Path Traversal via lockfile alias
pacquet, the Rust package-manager component shipped in the pnpm npm package versions >=12.0.0-alpha.0 and <12.0.0-alpha.5, does not validate dependency alias/name paths taken from a lockfile before using them in install-time filesystem joins. When a user installs a project with an attacker-supplied lockfile using --trust-lockfile or a frozen lockfile, alias entries containing path traversal segments (for example '../../escaped-link') are used when creating dependency and package links, bin destinations, hoisted entries, and virtual-store slots, allowing symlinks and directories to be created outside the intended project and node_modules boundary. Version 12.0.0-alpha.5 validates dependency names and every virtual-store slot path with a shared safe-join containment helper before any filesystem materialization, rejecting traversal, absolute, platform-specific, and reserved names with ERR_PNPM_INVALID_DEPENDENCY_NAME.
CVE-2026-101044
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-101044
pnpm
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "pnpm",
"product": "pnpm",
"versions": [
{
"status": "affected",
"version": "12.0.0-alpha.0",
"lessThan": "12.0.0-alpha.5",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "12.0.0-alpha.5",
"versionType": "semver"
}
],
"packageURL": "pkg:npm/pnpm",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-101044
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #4476 · Revision 1
- Added to Heist Feed
- Publisher date