MAL-2026-14035 Malicious code in notafollower122 (npm)
Malicious package
Published
MAL-2026-14035 is a malicious package: notafollower122 (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-2026-14035/ (Markdown: https://insights.sbomify.com/MAL-2026-14035/index.md)
- Package
- notafollower122
- Registry
- npm
What is MAL-2026-14035?
MAL-2026-14035 is a malicious package in notafollower122, published on 14 Aug 2026.
Official description
package.json declares a postinstall lifecycle script that runs automatically on
npm install. The script uses child_process to query the AWS ECS container metadata endpoint (ECS_CONTAINER_METADATA_URI_V4/task), which returns the cluster name, AWS account ID, task ARN, and container image list for the installer's ECS task, then POSTs the response body to the hardcoded ngrok tunnel https://mourner-slot-explicit.ngrok-free.dev via curl -X POST... --data-binary @-. The package ships only package.json with no source, build artifacts, or documented functionality, so the postinstall has no legitimate purpose. The destination is an anonymous, mutable ngrok tunnel with no relationship to any publisher — the shape of cloud-environment reconnaissance and exfiltration against AWS ECS installers.What should I do about MAL-2026-14035?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.