{"id":"CVE-2026-82393","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-82393","generatedAt":"2026-10-28T02:21:07.190Z","title":"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.","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.","published":"2026-08-31T22:17:22.000Z","lastModified":"2026-09-09T21:09:13.000Z","status":"Deferred","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H"},"cwe":["CWE-22","CWE-73","CWE-94"],"affected":[],"epss":{"score":0.00626,"percentile":0.49741,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.63%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/pnpm/pnpm/commit/51300fd41c5e4c8f47635108e373cc3d1f324fa7","source":"security-advisories@github.com"},{"url":"https://github.com/pnpm/pnpm/commit/78e29fe5583a1e5d69ea05e414eff310f78d5ed9","source":"security-advisories@github.com"},{"url":"https://github.com/pnpm/pnpm/pull/12872","source":"security-advisories@github.com"},{"url":"https://github.com/pnpm/pnpm/pull/12890","source":"security-advisories@github.com"},{"url":"https://github.com/pnpm/pnpm/releases/tag/v10.34.5","source":"security-advisories@github.com"},{"url":"https://github.com/pnpm/pnpm/releases/tag/v11.11.0","source":"security-advisories@github.com"},{"url":"https://github.com/pnpm/pnpm/security/advisories/GHSA-vq4v-j7r6-jq4m","source":"security-advisories@github.com"},{"url":"https://github.com/pnpm/pnpm/security/advisories/GHSA-vq4v-j7r6-jq4m","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-82393","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}