MAL-2026-14034 Malicious code in notafollower1 (npm)
Malicious package
Published
MAL-2026-14034 is a malicious package: notafollower1 (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-2026-14034/ (Markdown: https://insights.sbomify.com/MAL-2026-14034/index.md)
- Package
- notafollower1
- Registry
- npm
What is MAL-2026-14034?
MAL-2026-14034 is a malicious package in notafollower1, published on 14 Aug 2026.
Official description
package.json declares a postinstall script that automatically runs on npm install and fetches AWS ECS container task metadata via the ECS_CONTAINER_METADATA_URI_V4 endpoint (task ARN, container names, image names), then POSTs the collected data to a hardcoded ngrok tunnel at https://mourner-slot-explicit.ngrok-free.dev using curl. The postinstall also inspects the container image name for substrings matching known security research operators (twbray, packagehound, wiz, oss-dynamic) and labels the payload accordingly, indicating deliberate sandbox and analyst fingerprinting. The destination is an anonymous ngrok tunnel unrelated to any legitimate publisher infrastructure, and the collected data reveals installer-side CI/build/container environment details to a third party.
What should I do about MAL-2026-14034?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.