MAL-2026-13857 Malicious code in @years18/n8n-nodes-utils-helper-m (npm)
Malicious package
Published
MAL-2026-13857 is a malicious package: @years18/n8n-nodes-utils-helper-m (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-2026-13857/ (Markdown: https://insights.sbomify.com/MAL-2026-13857/index.md)
- Package
- @years18/n8n-nodes-utils-helper-m
- Registry
- npm
What is MAL-2026-13857?
MAL-2026-13857 is a malicious package in @years18/n8n-nodes-utils-helper-m, published on 12 Aug 2026.
Official description
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.What should I do about MAL-2026-13857?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.