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Medium

pnpm: Tarball hash of GitHub git dependencies is not stored in lockfile

  • Disclosed: 26.06.2026
  • Updated: 11.10.2026 10:22

Summary

A malicious codeload.github.com server can serve whatever tarball it wants and pnpm will install it regardless of the lockfile.

Details

The lockfile does not store the hash of the dependencies from https://codeload.github.com

This means that if this server was compromised or a person's machine configuration was compromised, pnpm would download and install these dependencies.

PoC

bash
> pnpm -v     
10.28.2

Given the following package.json:

js
{
  "dependencies": {
    "add": "git://github.com/dsherret/npm-git-dep.git#b3eeb9b"
  }
}

This produces a lockfile like so:

yaml
lockfileVersion: '9.0'

settings:
  autoInstallPeers: true
  excludeLinksFromLockfile: false

importers:

  .:
    dependencies:
      add:
        specifier: git://github.com/dsherret/npm-git-dep.git#b3eeb9b
        version: https://codeload.github.com/dsherret/npm-git-dep/tar.gz/b3eeb9b

packages:

  add@https://codeload.github.com/dsherret/npm-git-dep/tar.gz/b3eeb9b:
    resolution: {tarball: https://codeload.github.com/dsherret/npm-git-dep/tar.gz/b3eeb9b}
    version: 1.0.0

snapshots:

  add@https://codeload.github.com/dsherret/npm-git-dep/tar.gz/b3eeb9b: {}

Notice that there is no hash. The b3eeb9b is not sufficient because I can configure my machine to resolve a compromised tarball from that url (I tested it out and pnpm just installs it).

Impact

Anyone relying on github git dependencies.

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
npm package pnpm < 10.33.4, >= 11.0.0, < 11.0.7 10.33.4, 11.0.7

References

CVSS score -
CVSS vector
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U
Weakness (CWE)
CWE-353
Platform
npm
Package
pnpm
Disclosed
26.06.2026
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-hg3w-7f8c-63hp - CC BY 4.0

Vulnerability history: pnpm

All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (32) in the archive
Total entries
32
First → latest
03.2022 09.2026
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • High 18
  • Medium 14

Disclosures per year

Severity:
  1. pnpm: Virtual store linker path traversal via unvalidated depPath name in lockfileToDepGraph
    High · 7.1 CVE-2026-82392 < 10.34.5, >= 11.0.0, < 11.11.0 10.34.5, 11.11.0
  2. pnpm: A tarball dependency's manifest `name` escapes node_modules → arbitrary file write/overwrite on install
    High · 7.5 CVE-2026-82393 < 10.34.5, >= 11.0.0, < 11.11.0 10.34.5, 11.11.0
  3. pnpm: Environment secrets exfiltrated via env-placeholder expansion in proxy settings read from an untrusted pnpm-workspace.yaml
    High · 7.4 CVE-2026-101043 >= 11.0.0, < 11.11.0, >= 10.7.0, < 10.34.5 11.11.0, 10.34.5
  4. pnpm: pacquet trust-lockfile install can create dependency symlinks outside the project
    High · 7.1 ghsa-2rx9-3g3h-c2jv >= 12.0.0-alpha.0, < 12.0.0-alpha.5 12.0.0-alpha.5
  5. pnpm: Path traversal in configDependencies env lockfile allows symlink creation outside node_modules/.pnpm-config
    High · 8.2 CVE-2026-59195 < 10.34.4, >= 11.0.0, < 11.8.0 10.34.4, 11.8.0
  6. pnpm: `patch-remove` could delete project-selected files outside the patches directory
    High · 7.1 CVE-2026-59194 < 10.34.4, >= 11.0.0, < 11.7.0 10.34.4, 11.7.0
  7. pnpm: Hoisted install imports lockfile alias outside node_modules
    High · 7.1 CVE-2026-59196 < 10.34.4, >= 11.0.0, < 11.7.0 10.34.4, 11.7.0
  8. pnpm: `stage download` writes outside its destination directory via manifest name/version traversal
    High · 7.1 CVE-2026-55700 >= 11.3.0, < 11.5.3 11.5.3
  9. pnpm: Project env lockfile can short-circuit package-manager resolution and execute lockfile-selected pnpm bytes
    High · 8.8 CVE-2026-55698 < 10.34.2, >= 11.0.0, < 11.5.3 10.34.2, 11.5.3
  10. pnpm: Repository-controlled configDependencies can select a pacquet native install engine
    High · 7.5 CVE-2026-55697 < 10.34.2, >= 11.0.0, < 11.5.3 10.34.2, 11.5.3
  11. pnpm: Manifest identity spoof satisfies allowBuilds and runs attacker lifecycle
    High · 7.5 CVE-2026-55487 < 10.34.2, >= 11.0.0, < 11.5.3 10.34.2, 11.5.3
  12. pnpm Vulnerable to Arbitrary File Write/Delete via Malicious Patch File (Path Traversal)
    High · 7.3 CVE-2026-50015 < 10.34.0, >= 11.0.0, < 11.4.0 10.34.0, 11.4.0
  13. pnpm: Transitive dependency alias path traversal allows project path override via symlink replacement
    High · 8.8 CVE-2026-50016 < 10.34.0, >= 11.0.0, < 11.4.0 10.34.0, 11.4.0
  14. pnpm: Tarball hash of GitHub git dependencies is not stored in lockfile this entry
    Medium CVE-2026-48995 < 10.33.4, >= 11.0.0, < 11.0.7 10.33.4, 11.0.7
  15. pnpm v10+ Bypass "Dependency lifecycle scripts execution disabled by default"
    High · 8.8 CVE-2025-69264 >= 10.0.0, < 10.26.0 10.26.0
  16. pnpm Has Lockfile Integrity Bypass that Allows Remote Dynamic Dependencies
    High · 7.5 CVE-2025-69263 < 10.26.0 10.26.0
  17. pnpm vulnerable to Command Injection via environment variable substitution
    High · 7.5 CVE-2025-69262 >= 6.25.0, < 10.27.0 10.27.0
  18. pnpm incorrectly parses tar archives relative to specification
    High · 7.5 CVE-2023-37478 < 7.33.4, >= 8.0.0, < 8.6.8 7.33.4, 8.6.8
  19. Untrusted Search Path in PNPM
    High · 8.8 CVE-2022-26183 < 6.15.1 6.15.1

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