EUVD-2026-68883Severity by source
AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Scope changed to S:C because file writes escape node_modules to arbitrary filesystem paths outside pnpm's authority; all other metrics align with the provided vector.
Primary rating from Vendor (GitHub_M).
CVSS VectorVendor: GitHub_M
Lifecycle Timeline
4DescriptionCVE.org
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.
AnalysisAI
Scoped path traversal in pnpm allows arbitrary filesystem overwrites during package installation, defeating the --ignore-scripts safety flag entirely. Affected are pnpm v10 before 10.34.5 and v11 before 11.11.0: the package manager's name validation in pickPackage.ts rejects slash characters only for unscoped package names, permitting a scoped name such as @evil/../../../home/user/.bashrc to pass unchecked into raw path joins across three resolver modules and extract package content to any attacker-controlled path. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The victim must run pnpm install or any pnpm command triggering dependency resolution against a project whose dependency graph includes a package with a scoped name containing .. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The provided CVSS 3.1 vector (AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H) scores 7.5. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade pnpm to version 10.34.5 (https://github.com/pnpm/pnpm/releases/tag/v10.34.5) or 11.11.0 (https://github.com/pnpm/pnpm/releases/tag/v11.11.0), the vendor-confirmed patched releases for the respective branches. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: identify all systems running pnpm v10 prior to 10.34.5 or v11 prior to 11.11.0 and audit current package sources. …
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Same weakness CWE-22 – Path Traversal
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External POC / Exploit Code
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