MAL-2026-2666 Malicious code in moooo (PyPI)
Malicious package
Published
MAL-2026-2666 is a malicious package: moooo (PyPI). 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-2026-2666/ (Markdown: https://insights.sbomify.com/MAL-2026-2666/index.md)
- Package
- moooo
- Registry
- PyPI
What is MAL-2026-2666?
MAL-2026-2666 is a malicious package in moooo, published on 14 Apr 2026.
Official description
When used, the package silently loads code with an infostealer focused on Discord data.
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2026-04-moooo
Reasons (based on the campaign):
exfiltration-generic
exfiltration-credentials
infostealer
action-hidden-in-lib-usage
What should I do about MAL-2026-2666?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.