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Improper Privilege Management in shelljsGHSA-64g7-mvw6-v9qj

GHSA-64g7-mvw6-v9qj is a security vulnerability in shelljs. A fix is available for shelljs — see the affected versions and patch details below.

Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Jan 14, 2022 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

1 pkg affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.

18Kother npm packages depend on this — each one inherits the vulnerability until it's patched upstream
shelljsnpm
10.2Mdownloads / week

Description

Impact

Output from the synchronous version of shell.exec() may be visible to other users on the same system. You may be affected if you execute shell.exec() in multi-user Mac, Linux, or WSL environments, or if you execute shell.exec() as the root user.

Other shelljs functions (including the asynchronous version of shell.exec()) are not impacted.

Patches

Patched in shelljs 0.8.5

Workarounds

Recommended action is to upgrade to 0.8.5.

References

https://huntr.dev/bounties/50996581-c08e-4eed-a90e-c0bac082679c/

For more information

If you have any questions or comments about this advisory:

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
📦npmshelljsall versions0.8.5npm install shelljs@0.8.5

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for shelljs, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update shelljs to 0.8.5 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-64g7-mvw6-v9qj is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

### Impact Output from the synchronous version of `shell.exec()` may be visible to other users on the same system. You may be affected if you execute `shell.exec()` in multi-user Mac, Linux, or WSL environments, or if you execute `shell.exec()` as the root user. Other shelljs functions (including the asynchronous version of `shell.exec()`) are not impacted. ### Patches Patched in shelljs 0.8.5 ### Workarounds Recommended action is to upgrade to 0.8.5. ### References https://huntr.dev/bounties/50996581-c08e-4eed-a90e-c0bac082679c/ ### For more information If you have any questions or comme
O3 Security · Impact-Aware SCA

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Improper Privilege Management in shelljs