{"cve":"CVE-2026-55698","nvd":{"published":"2026-06-25T18:16:40.837","modified":"2026-06-30T19:03:56.020","status":"Analyzed","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","score":8.8},"cwes":["CWE-345","CWE-494","CWE-829"],"references":["https://github.com/pnpm/pnpm/security/advisories/GHSA-w466-c33r-3gjp","https://github.com/pnpm/pnpm/security/advisories/GHSA-w466-c33r-3gjp"],"products":["pnpm:pnpm"],"source":"nvd","synced_at":"2026-10-19T22:41:17.107060303+00:00"},"epss":{"cve":"CVE-2026-55698","score":0.00297,"percentile":0.22369,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-w466-c33r-3gjp","url":"https://osv.dev/vulnerability/GHSA-w466-c33r-3gjp","summary":"pnpm: Project env lockfile can short-circuit package-manager resolution and execute lockfile-selected pnpm bytes","modified":"2026-06-26T23:56:28.599663Z","packages":[{"ecosystem":"npm","name":"pnpm","purl":"pkg:npm/pnpm","ranges":["<10.34.2"],"fixed":["10.34.2"]},{"ecosystem":"npm","name":"pnpm","purl":"pkg:npm/pnpm","ranges":[">=11.0.0 <11.5.3"],"fixed":["11.5.3"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}