# MAL-2026-13864: Malicious code in @years18/n8n-nodes-utils-helper-t (npm)


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

## What is MAL-2026-13864?

MAL-2026-13864 is a malicious package in @years18/n8n-nodes-utils-helper-t, published on 12 Aug 2026. 

### Official description

The package's postinstall script and its main entry (index.js, byte-identical to callback.js) execute the same payload on `npm install` and on `require()`. The payload runs `id` and `hostname`, base64-encodes the output, and sends it to https://jasabersama.id/portfolio-data.php with `k=` and `c=` query parameters; TLS certificate verification is disabled (`rejectUnauthorized:false`). The `c=` parameter carries a base64-decode-and-append shell command written to /tmp/n8n_rce_result.txt, giving the operator a server-driven command channel. The same script pip-installs `impacket` with `--break-system-packages`, probes for `PyRoxy`, and executes `python3 start.py` under /tmp/mhddos — staging and running an mhddos DDoS toolkit on the installer host. The package name mimics a legitimate n8n community node to lure installation.

## What should I do about MAL-2026-13864?

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-2026-13864 is a malicious package: @years18/n8n-nodes-utils-helper-t (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-2026-13864/ (Markdown: https://insights.sbomify.com/MAL-2026-13864/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-13864

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-13864/
Summaries are generated and may contain mistakes; the official description above is the record.