CVE-2026-55698
pnpm: Project env lockfile can short-circuit package-manager resolution and execute lockfile-selected pnpm bytes
pnpm is a package manager. Prior to 10.34.2 and 11.5.3, pnpm can persist package-manager bootstrap metadata in the first YAML document of pnpm-lock.yaml. Before the patch, direct pnpm execution trusted an already resolved packageManagerDependencies entry when the committed env lockfile contained matching pnpm and @pnpm/exe versions. A malicious repository could therefore commit package-manager lockfile package records and snapshots that bypassed fresh package-manager resolution, then cause pnpm to install and execute bytes selected by that committed lockfile state during automatic version switching. This vulnerability is fixed in 10.34.2 and 11.5.3.
- Affected
- pnpm
- CVSS v3.1 GITHUB
- 8.8 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - EPSS
- 0.30% chance of exploitation in the next 30 days, 21st percentile
- Published
- 2026-06-25
- Updated
- 2026-06-26