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Not in CISA KEV
HIGH severity

GHSA-qjg4-w4c6-f6c6

HIGHFix: mikaelbr/mversion@6c76c9e

GHSA-qjg4-w4c6-f6c6 is a high-severity (CVSS 7.3) CWE-77 vulnerability in mversion. O3 Security confirms whether GHSA-qjg4-w4c6-f6c6 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.

Command injection in mversion

Also known asCVE-2020-4059
Published
Jun 18, 2020
Updated
Mar 13, 2026
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Mar 13, 2026 · OSV.dev, NVD, 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.

10other npm packages depend on this — each one inherits the vulnerability until it's patched upstream
mversionnpm
9Kdownloads / week

Description

Impact

This issue may lead to remote code execution if a client of the library calls the vulnerable method with untrusted input.

Patches

Patched by version 2.0.0. Previous releases are deprecated in npm.

Workarounds

Make sure to escape git commit messages when using the commitMessage option for the update function.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
📦npmmversionall versions2.0.0

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for mversion. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

  2. Fix

    Update mversion to 2.0.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-qjg4-w4c6-f6c6 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.

  4. How O3 protects you

    O3 pinpoints whether GHSA-qjg4-w4c6-f6c6 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to GHSA-qjg4-w4c6-f6c6. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

### Impact This issue may lead to remote code execution if a client of the library calls the vulnerable method with untrusted input. ### Patches Patched by version 2.0.0. Previous releases are deprecated in npm. ### Workarounds Make sure to escape git commit messages when using the commitMessage option for the update function.
O3 Security · Impact-Aware SCA

Is GHSA-qjg4-w4c6-f6c6 in your dependencies?

O3 detects GHSA-qjg4-w4c6-f6c6 across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

GHSA-qjg4-w4c6-f6c6: Command injection in… | O3 Security