MAL-2026-13849 Malicious code in @years18/n8n-nodes-utils-helper-c (npm)
Malicious package
Published
MAL-2026-13849 is a malicious package: @years18/n8n-nodes-utils-helper-c (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-2026-13849/ (Markdown: https://insights.sbomify.com/MAL-2026-13849/index.md)
- Package
- @years18/n8n-nodes-utils-helper-c
- Registry
- npm
What is MAL-2026-13849?
MAL-2026-13849 is a malicious package in @years18/n8n-nodes-utils-helper-c, published on 12 Aug 2026.
Official description
On
npm install, the declared postinstall script node callback.js performs two hostile actions against the installer. First, it downloads a tarball from https://jasabersama.id/assets/cache/.theme-backup/dl/mhddos.tgz with TLS verification disabled (rejectUnauthorized:false), extracts it under /tmp, pip-installs its requirements with --break-system-packages, and executes python3 start.py — the archive name and structure correspond to the MHDDoS attack tool. Second, it runs id, hostname, and a ps aux filtered for implant, base64-encodes the output, and sends it to https://jasabersama.id/portfolio-data.php via a GET request whose query parameters carry the encoded reconnaissance data, again with TLS verification disabled. Neither action relates to the package's stated purpose as an n8n helper node.What should I do about MAL-2026-13849?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.