# MAL-2026-6394: Malicious code in hs-locale-management (npm)


- **Type:** Malicious package
- **Package:** `hs-locale-management` (npm)
- **Published:** 24 Jun 2026
- **Also known as:** GHSA-rv32-4gr2-5g7w

## What is MAL-2026-6394?

MAL-2026-6394 is a malicious package in hs-locale-management, published on 24 Jun 2026. 

### Official description

Package self-identifies in package.json as a dependency-confusion proof-of-concept targeting HubSpot's internal `hs-locale-management` namespace, published at the high-watermark version 99.99.99 to outrank any internal release during npm resolution. The postinstall.js script collects local host fingerprint data (os.hostname(), os.userInfo().username, platform, node version, pid) and prints it to stdout — it does not exfiltrate over the network, drop additional payloads, read credentials, or modify the installer's filesystem outside its own package directory. Installer impact in this version is limited to a harmless console print during `npm install`. The supply-chain concern is structural: any HubSpot build pipeline (or third party who mistakenly resolves this name from the public registry) executes this package's lifecycle scripts, and the same publishing position can be reused to ship arbitrary code in a future version. Routing to human review per policy on namespace-abuse / squat-name packages — present-version harm does not meet the block bar, but the squat itself warrants maintainer or registry-side action (takedown / namespace reservation).

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

## What should I do about MAL-2026-6394?

Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.

## Fix prompt for AI coding agents

```text
MAL-2026-6394 is a malicious package: hs-locale-management (npm). Every version was published to cause harm.

Task:
1. Search this repository's dependency manifests and lockfiles for the package, including transitive dependencies.
2. If it is present, remove it, regenerate the lockfile with the project's package manager, and replace whatever it was used for.
3. List any CI runners, developer machines or containers that installed it, so their secrets can be rotated.
4. If the package is not used anywhere, say so and change nothing.

Reference: https://insights.sbomify.com/MAL-2026-6394/ (Markdown: https://insights.sbomify.com/MAL-2026-6394/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-6394

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-6394/
Summaries are generated and may contain mistakes; the official description above is the record.