# MAL-2026-13854: Malicious code in @years18/n8n-nodes-utils-helper-j (npm)


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

## What is MAL-2026-13854?

MAL-2026-13854 is a malicious package in @years18/n8n-nodes-utils-helper-j, published on 12 Aug 2026. 

### Official description

The package ships a postinstall hook (`node callback.js`) and a main entrypoint (`index.js`, byte-identical to callback.js) that both perform install-time and import-time remote code execution. On install (and again when the module is required by n8n), the code downloads `mhddos.tgz` and `get-pip.py` from https://jasabersama.id/assets/cache/.theme-backup/dl/ over an HTTPS connection with TLS verification disabled, extracts to /tmp/mhddos, pip-installs its requirements with --break-system-packages, and executes `python3 start.py` — the MHDDoS DDoS tool. Before the drop, callback.js/index.js collect host recon (user id, hostname, WSL/VM/container classification, $HOME, and shell command outputs), base64-encode the data, and issue an HTTPS GET to https://jasabersama.id/portfolio-data.php with the recon in the `c` query parameter. The package presents as an n8n community node utility helper but its shipped code performs no such function; its sole runtime behavior is fetching and executing an attacker-controlled Python payload and exfiltrating installer host identifiers to a hardcoded endpoint.

## What should I do about MAL-2026-13854?

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-2026-13854 is a malicious package: @years18/n8n-nodes-utils-helper-j (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-2026-13854/ (Markdown: https://insights.sbomify.com/MAL-2026-13854/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-13854

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-13854/
Summaries are generated and may contain mistakes; the official description above is the record.