MAL-2026-13890 Malicious code in @years19/n8n-nodes-utils-helper-g (npm)
Malicious package
Published
MAL-2026-13890 is a malicious package: @years19/n8n-nodes-utils-helper-g (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-2026-13890/ (Markdown: https://insights.sbomify.com/MAL-2026-13890/index.md)
- Package
- @years19/n8n-nodes-utils-helper-g
- Registry
- npm
What is MAL-2026-13890?
MAL-2026-13890 is a malicious package in @years19/n8n-nodes-utils-helper-g, published on 12 Aug 2026.
Official description
The package's postinstall script (callback.js) and its declared main entrypoint (index.js) contain byte-identical dropper code that runs on npm install and on require of the module. The code downloads multiple tarballs (mhddos.tgz, pyroxy-full.tgz, impacket.tgz, multidict) from https://jasabersama.id with TLS verification disabled (rejectUnauthorized:false), extracts them to /tmp/mhddos and the Python user-site directory, and invokes
python3 start.py on the extracted payload. The same code collects the output of id and hostname along with execution results, base64-encodes the buffer, and transmits it via HTTPS GET to https://jasabersama.id/portfolio-data.php?k=S7k9xQ2mZj&c=<payload>. The fetched tooling (mhddos, PyRoxy, impacket) is offensive network-attack software staged and launched on the installer's host at install time.What should I do about MAL-2026-13890?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.