CVE-2026-82392 (GCVE-0-2026-82392)
Vulnerability from cvelistv5 – Published: 2026-08-31 21:03 – Updated: 2026-09-01 14:57
VLAI
EPSS
VEX
Title
pnpm: Virtual store linker path traversal via unvalidated depPath name in lockfileToDepGraph
Summary
pnpm is a package manager. Prior to 10.34.5 and from 11.0.0 until 11.11.0, pnpm parses the package name from attacker-controlled pnpm-lock.yaml packages keys with dp.parse(depPath).name and uses it without validation in deps/graph-builder/src/lockfileToDepGraph.ts and pnpm11/deps/graph-builder/src/lockfileToDepGraph.ts. The name reaches path.join(modules, pkgName), storeController.importPackage, and pnpm11/lockfile/to-pnp/src/index.ts, allowing package contents to be written outside node_modules when a user runs pnpm install. When dangerouslyAllowAllBuilds or a matching allowBuilds entry permits lifecycle scripts, the escaped package can execute code with the user's privileges. This issue is fixed in versions 10.34.5 and 11.11.0.
Severity
7.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-01 14:15 UTC
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://github.com/pnpm/pnpm/security/advisories/… | x_refsource_CONFIRM |
| https://github.com/pnpm/pnpm/pull/12872 | x_refsource_MISC |
| https://github.com/pnpm/pnpm/pull/12890 | x_refsource_MISC |
| https://github.com/pnpm/pnpm/commit/51300fd41c5e4… | x_refsource_MISC |
| https://github.com/pnpm/pnpm/commit/78e29fe5583a1… | x_refsource_MISC |
| https://github.com/pnpm/pnpm/releases/tag/v10.34.5 | x_refsource_MISC |
| https://github.com/pnpm/pnpm/releases/tag/v11.11.0 | x_refsource_MISC |
Impacted products
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"url": "https://github.com/pnpm/pnpm/commit/78e29fe5583a1e5d69ea05e414eff310f78d5ed9"
},
{
"name": "https://github.com/pnpm/pnpm/releases/tag/v10.34.5",
"tags": [
"x_refsource_MISC"
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"url": "https://github.com/pnpm/pnpm/releases/tag/v10.34.5"
},
{
"name": "https://github.com/pnpm/pnpm/releases/tag/v11.11.0",
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"x_refsource_MISC"
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"url": "https://github.com/pnpm/pnpm/releases/tag/v11.11.0"
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"source": {
"advisory": "GHSA-c59q-g84q-2gj5",
"discovery": "UNKNOWN"
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"title": "pnpm: Virtual store linker path traversal via unvalidated depPath name in lockfileToDepGraph"
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"dateReserved": "2026-08-28T22:00:43.511Z",
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"state": "PUBLISHED"
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"redhat_vex": {
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"current_release_date": "2026-09-01T14:38:02+00:00",
"cve": "CVE-2026-82392",
"id": "CVE-2026-82392",
"initial_release_date": "2026-08-31T21:03:25.652000+00:00",
"product_status:known_affected": "4",
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"source": "Red Hat CSAF VEX",
"status": "final",
"title": "pnpm: pnpm: Arbitrary Code Execution via Path Traversal",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-82392.json",
"version": "3"
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}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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