MAL-2026-5417 Malicious code in @klapp-sca/routes (npm)
Malicious package
Published
MAL-2026-5417 is a malicious package: @klapp-sca/routes (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-2026-5417/ (Markdown: https://insights.sbomify.com/MAL-2026-5417/index.md)
- Package
- @klapp-sca/routes
- Registry
- npm
What is MAL-2026-5417?
MAL-2026-5417 is a malicious package in @klapp-sca/routes, published on 9 Jun 2026.
Official description
package.json declares
"preinstall": "node index.js || true", so on every npm install the bundled index.js runs automatically and collects os.hostname(), os.userInfo().username, __dirname, and process.cwd() into a JSON payload. The payload is hex-encoded into DNS labels and resolved against *.d8jbmnsqcfu78dfs8vdg34ohqhirb4pbg.oast.live (an Interactsh/Burp-Collaborator-style out-of-band DNS sink) and simultaneously POSTed to a hardcoded bare IP at http://172.201.213.59:9090/c. This is a classic install-time reconnaissance beacon: installer machine identity is leaked to attacker-controlled infrastructure without any consent or user action beyond installing the package. The package's stated 'security research' description does not change the impact — any installer that runs npm install has their hostname, username, and working-directory paths sent to third-party endpoints.What should I do about MAL-2026-5417?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.