CVE-2026-59195Public exploitNetwork attack vector

Filesystem writes via config dependency path traversal

Published Jul 6, 2026 · Updated Jul 6, 2026

Path traversal in pnpm before 10.34.4 and pnpm 11 before 11.8.0 allows remote attackers to write symlinks via a malicious lockfile. The config dependency installer passes unvalidated env-lockfile keys to path.join as symlink destinations under node_modules/.pnpm-config, allowing dot-dot components to escape that directory. Exploitation requires a user or CI job to install a malicious or compromised repository; scripts can remain disabled, and writes depend on path permissions.

CVSS severity8.2
High
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in pnpm before 10.34.4 and pnpm 11 before 11.8.0 allows remote attackers to write symlinks via a malicious lockfile. The config dependency installer passes unvalidated env-lockfile keys to path.join as symlink destinations under node_modules/.pnpm-config, allowing dot-dot components to escape that directory. Exploitation requires a user or CI job to install a malicious or compromised repository; scripts can remain disabled, and writes depend on path permissions.

The record

CVE
CVE-2026-59195
Published
Jul 6, 2026
Updated
Jul 6, 2026
Vendor
pnpm
Product
pnpm
Classifications
CWE-22, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 6, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 10.34.4
  2. Affected versionversion=>= 11.0.0, < 11.8.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

pnpm · pnpmversion=< 10.34.4; version=>= 11.0.0, < 11.8.0

Published CVSS scores

8.2GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1204.002Malicious File

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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