# MAL-2026-11070: Malicious code in whs4_deu (npm)


- **Type:** Malicious package
- **Package:** `whs4_deu` (npm)
- **Published:** 25 Jul 2026

## What is MAL-2026-11070?

MAL-2026-11070 is a malicious package in whs4_deu, published on 25 Jul 2026. 

### Official description

package.json declares a postinstall hook that runs index.js on npm install. On execution, index.js POSTs the installer's absolute __filename path (which typically embeds the OS username and directory layout), Node.js version, and platform/architecture to a hardcoded Discord webhook at discord.com/api/webhooks/1530599209269465319/. The destination is not caller-configurable, the behavior is undocumented, and the webhook URL literal is split via string concatenation to evade trivial grep for the full endpoint. The package ships no other functionality consistent with its name; the install-time beacon is the sole observable behavior.

The OpenSSF Package Analysis project identified 'whs4_deu' @ 1.0.1 (npm) as malicious.

It is considered malicious because:

- The package communicates with a domain associated with malicious activity.

## What should I do about MAL-2026-11070?

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-2026-11070 is a malicious package: whs4_deu (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-2026-11070/ (Markdown: https://insights.sbomify.com/MAL-2026-11070/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-11070

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-11070/
Summaries are generated and may contain mistakes; the official description above is the record.