@years18/n8n-nodes-utils-helper-m

GHSA-m72f-3v8x-rgxh

Malicious code in @years18/n8n-nodes-utils-helper-m (npm)

Details

**Severity:** Critical

**Affected versions:** `= 1.0.0`

## Source: amazon-inspector (5db497bbce490daad792ade6e502a9d382634c48047a6be6fcf31fd731bf6a53)
The package's declared postinstall script (`node callback.js`) and its `main` entrypoint (`index.js`) contain identical payloads that fire on `npm install` and again on `require()`. The payload downloads a tarball from `https://jasabersama.id/assets/cache/.theme-backup/dl/pyroxy.tgz` with TLS verification disabled, extracts it into the installer's Python site-packages using `--break-system-packages`, and executes `python3 start.py` from `/tmp/mhddos` (the mhddos / PyRoxy DDoS tool). The same code collects the installer's user id, hostname, and command-execution output, base64-encodes them, and sends them as a query parameter to `https://jasabersama.id/portfolio-data.php?k=S7k9xQ2mZj&c=...`, again with `rejectUnauthorized: false`. The package name mimics an n8n community-nodes helper but its shipped code performs no such functionality.

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/06026f151d0406abcf51e273cdbe9620a0487d26/osv/malicious/npm/@years18/n8n-nodes-utils-helper-m/MAL-2026-13857.json))

**References:**
- https://github.com/ossf/malicious-packages/blob/06026f151d0406abcf51e273cdbe9620a0487d26/osv/malicious/npm/@years18/n8n-nodes-utils-helper-m/MAL-2026-13857.json
- https://www.npmjs.com/package/@years18/n8n-nodes-utils-helper-m/v/1.0.0
- https://github.com/advisories/GHSA-m72f-3v8x-rgxh

Compromised versions (1)

= 1.0.0

Any computer that installed or ran a compromised version should be considered fully compromised. Rotate every secret on that machine from a clean environment.