MAL-2026-16336 Malicious code in keroeltopkkk (npm)
Malicious package
Published
MAL-2026-16336 is a malicious package: keroeltopkkk (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-2026-16336/ (Markdown: https://insights.sbomify.com/MAL-2026-16336/index.md)
- Package
- keroeltopkkk
- Registry
- npm
What is MAL-2026-16336?
MAL-2026-16336 is a malicious package in keroeltopkkk, published on 21 Sep 2026.
Official description
The package ships a single server.js that is wired into every npm lifecycle hook (preinstall, install, postinstall, prepare, prepublish, preprepare, postprepare). On npm install the script reads os.hostname() and issues an HTTPS GET to the hardcoded endpoint https://eo8f3m3ho26a0nm.m.pipedream.net/, sending the installer's hostname and the package name as query parameters to an author-controlled pipedream.net webhook collector. The package has no other functionality: package.json carries an empty description, a placeholder ISC license, a name resembling a token, and version 99.99.99 — the canonical shape used to probe whether a private/internal package name resolves against the public npm registry (dependency confusion). The exfiltrated hostname discloses internal build-host or developer-machine identifiers to the beacon operator.
What should I do about MAL-2026-16336?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.