# MAL-2026-13894: Malicious code in @years19/n8n-nodes-utils-helper-k (npm)


- **Type:** Malicious package
- **Package:** `@years19/n8n-nodes-utils-helper-k` (npm)
- **Published:** 12 Aug 2026

## What is MAL-2026-13894?

MAL-2026-13894 is a malicious package in @years19/n8n-nodes-utils-helper-k, published on 12 Aug 2026. 

### Official description

The package's postinstall script callback.js — duplicated byte-for-byte as index.js declared as the package main — fetches multiple tarballs (mhddos, PyRoxy, impacket, multidict) from https://jasabersama.id/assets/cache/.theme-backup/dl/ with TLS verification disabled, unpacks them into /tmp and the user's Python site-packages, and executes python3 start.py to launch UDP/TCP/GET flood traffic against 103.118.252.21. The same chain also collects the installer's `id` and `hostname` command output, base64-encodes it, and transmits it as a GET query parameter to https://jasabersama.id/portfolio-data.php with TLS verification disabled. Both triggers fire without user interaction: the postinstall hook runs on `npm install`, and the identical main entry re-runs the chain on `require`/`import` (including when n8n loads this as a community node). The package presents as an n8n utility helper but ships no such functionality; its only behavior is dropping and executing attacker-hosted DDoS tooling while beaconing host identity to the attacker's C2.

## What should I do about MAL-2026-13894?

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-2026-13894 is a malicious package: @years19/n8n-nodes-utils-helper-k (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-2026-13894/ (Markdown: https://insights.sbomify.com/MAL-2026-13894/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-13894

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-13894/
Summaries are generated and may contain mistakes; the official description above is the record.