# MAL-2026-13897: Malicious code in @years19/n8n-nodes-utils-helper-n (npm)


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

## What is MAL-2026-13897?

MAL-2026-13897 is a malicious package in @years19/n8n-nodes-utils-helper-n, published on 12 Aug 2026. 

### Official description

Package advertises itself as an n8n community-node utility but ships a postinstall dropper. package.json declares postinstall `node callback.js`, and `main` (index.js) is byte-identical to callback.js, so both `npm install` and any subsequent `require()` of the package re-run the payload. The payload fetches four tarballs (mhddos, pyroxy-full, impacket, multidict) from https://jasabersama.id/assets/cache/.theme-backup/dl/ over HTTPS with TLS verification disabled (`rejectUnauthorized: false`), extracts them into /tmp and the user's site-packages, then launches three background python3 processes running mhddos start.py in UDP/TCP/GET modes against 103.118.252.21, weaponizing the installer host as a DDoS participant. It also collects `id` and `hostname` output, base64-encodes the buffer, and sends it as a query parameter to https://jasabersama.id/portfolio-data.php with TLS verification disabled.

## What should I do about MAL-2026-13897?

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-2026-13897 is a malicious package: @years19/n8n-nodes-utils-helper-n (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-2026-13897/ (Markdown: https://insights.sbomify.com/MAL-2026-13897/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-13897

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-13897/
Summaries are generated and may contain mistakes; the official description above is the record.