Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
pnpm: Project env lockfile can short-circuit package-manager resolution and execute lockfile-selected pnpm bytes
AV AC PR UI S C I A CVSS EPSS %ile KEV
N L N R U H H H 8.8 .0027 18.5 —
AFFECTED
Product Versions Fixed
pnpm < 10.34.2 – —
TIMELINE
Jun 17 Reserved by GitHub_M
Jun 25 EXPLOIT PUBLISHED — CVE-2026-55698 (pnpm). Public exploit reference added.
Jun 25 Published (CNA: GitHub_M)
Description
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.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| June 17, 2026 | Reserved | Reserved by GitHub_M |
| June 25, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-55698 (pnpm). Public exploit reference added. |
| June 25, 2026 | Published | Published (CNA: GitHub_M) |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| pnpm | pnpm | — | < 10.34.2 | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-55698 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.