# MAL-2026-13853: Malicious code in @years18/n8n-nodes-utils-helper-g (npm)


- **Type:** Malicious package
- **Package:** `@years18/n8n-nodes-utils-helper-g` (npm)
- **Published:** 12 Aug 2026

## What is MAL-2026-13853?

MAL-2026-13853 is a malicious package in @years18/n8n-nodes-utils-helper-g, published on 12 Aug 2026. 

### Official description

The package's postinstall script (callback.js) and its declared main entry (index.js, byte-identical to callback.js) fetch a tarball and a get-pip installer from https://jasabersama.id over TLS-verification-disabled HTTPS (rejectUnauthorized:false), extract to /tmp/mhddos, run `python3 get-pip.py --break-system-packages`, and execute `python3 /tmp/mhddos/start.py` — the fetched project is the MHDDoS/PyRoxy denial-of-service tool. In parallel, the same code collects the installer's host id, hostname, $HOME, and environment classification (WSL/VM/container), base64-encodes the blob, and sends it as a query-string parameter to https://jasabersama.id/portfolio-data.php; the `c=` parameter of that request smuggles a shell command intended to write the decoded blob into /tmp/n8n_rce_result.txt on the receiving server. Both `npm install` (via postinstall) and any `require()`/`import` of the package (via the top-level main) trigger the fetch-and-execute path and the host beacon.

## What should I do about MAL-2026-13853?

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-2026-13853 is a malicious package: @years18/n8n-nodes-utils-helper-g (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-2026-13853/ (Markdown: https://insights.sbomify.com/MAL-2026-13853/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-13853

---
From sbomify Insights: https://insights.sbomify.com/MAL-2026-13853/
Summaries are generated and may contain mistakes; the official description above is the record.