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Fencer Intel
high 7.1

CVE-2026-59196 json

pnpm: hoisted install imports lockfile alias outside node_modules

published 4mo ago modified 4mo ago also EUVD-2026-41882 , GHSA-fr4h-3cph-29xv

cvss
7.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 34%
public exploits
0
none known

Summary

pnpm is a package manager. Prior to 10.34.4 and 11.7.0, a crafted lockfile alias could be joined directly under a hoisted node_modules directory. Traversal aliases could escape that directory, while reserved aliases such as .bin or .pnpm could overwrite pnpm-owned layout. This vulnerability is fixed in 10.34.4 and 11.7.0.

Patch / fix

  • npm pnpm 10.34.4, 11.7.0
  • pnpm pnpm 10.34.4, 11.7.0

Is CVE-2026-59196 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-59196 updated cvss 7.1

pnpm: pnpm: hoisted install imports lockfile alias outside node_modules

  • Red Hat AMQ Broker 7 pnpm 8.10.0
    not affected: vulnerable code not present
  • Red Hat Build of Keycloak pnpm 8.10.0
    not affected: component not present
  • Red Hat JBoss Enterprise Application Platform 8 pnpm 8.10.0 Red Hat JBoss Enterprise Application Platform Expansion Pack pnpm 8.10.0
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
4mo ago

Exploit prediction

0.40% chance of exploitation in the next 30 days, higher than 34% of all scored CVEs (FIRST EPSS, 2026-11-11).

Exploits and checks

  • github.com https://github.com/pnpm/pnpm/security/advisories/GHSA-fr4h-3cph-29xv referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 7.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:L
GitHub 3.1 7.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:L

Affected packages

ecosystem package affected fixed in
npm pnpm
<10.34.4
>=11.0.0, <11.7.0
10.34.4
11.7.0

Affected products

  • pnpm pnpm

Classification

Weakness
  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory
  • CWE-73 External Control of File Name or Path

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

The maintainers of pnpm/pnpm published their own advisory on GitHub. Reviewed sources take precedence over it.