{"cve":"CVE-2026-82393","nvd":{"published":"2026-08-31T22:17:22.353","modified":"2026-09-09T21:09:13.080","status":"Deferred","description":"pnpm is a package manager. Prior to 10.34.5 and 11.11.0, pnpm accepts a scoped path traversal in a tarball dependency's package.json manifest name because pnpm11/resolving/npm-resolver/src/pickPackage.ts rejects slash characters only for unscoped names. During pnpm install, the unvalidated name reaches raw path joins in pnpm11/installing/deps-resolver/src/resolvePeers.ts, pnpm11/installing/deps-resolver/src/index.ts, and pnpm11/deps/graph-builder/src/lockfileToDepGraph.ts, causing package extraction outside node_modules and allowing attacker-controlled files to overwrite arbitrary filesystem paths even when --ignore-scripts is used. The overwrite can replace shell startup files, Git hooks, or installed package code and lead to code execution. This issue is fixed in versions 10.34.5, and 11.11.0.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","score":7.5},"cwes":["CWE-22","CWE-73","CWE-94"],"references":["https://github.com/pnpm/pnpm/commit/51300fd41c5e4c8f47635108e373cc3d1f324fa7","https://github.com/pnpm/pnpm/commit/78e29fe5583a1e5d69ea05e414eff310f78d5ed9","https://github.com/pnpm/pnpm/pull/12872","https://github.com/pnpm/pnpm/pull/12890","https://github.com/pnpm/pnpm/releases/tag/v10.34.5"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:50:50.842544443+00:00"},"epss":{"cve":"CVE-2026-82393","score":0.00626,"percentile":0.50044,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-vq4v-j7r6-jq4m","url":"https://osv.dev/vulnerability/GHSA-vq4v-j7r6-jq4m","summary":"pnpm: A tarball dependency's manifest `name` escapes node_modules → arbitrary file write/overwrite on install","modified":"2026-09-02T14:45:05.975185716Z","packages":[{"ecosystem":"npm","name":"pnpm","purl":"pkg:npm/pnpm","ranges":["<10.34.5"],"fixed":["10.34.5"]},{"ecosystem":"npm","name":"pnpm","purl":"pkg:npm/pnpm","ranges":[">=11.0.0 <11.11.0"],"fixed":["11.11.0"]}]}],"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."]}