MAL-2026-1283 Malicious code in demozecob (PyPI)
Malicious package
Published
MAL-2026-1283 is a malicious package: demozecob (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-2026-1283/ (Markdown: https://insights.sbomify.com/MAL-2026-1283/index.md)
- Package
- demozecob
- Registry
- PyPI
What is MAL-2026-1283?
MAL-2026-1283 is a malicious package in demozecob, published on 8 Mar 2026.
Official description
Packages that might be part of testing for pentesting / malicious activity / joy, with suspicious activity that does not present any real harm.
Category: PROBABLY_PENTEST - Packages looking like typical pentest packages, but also anything that looks like testing, exploring pre-prepared kits, research & co, with clearly low-harm possibilities.
Campaign: GENERIC-simple-tests
Reasons (based on the campaign):
- The package overrides the install command in setup.py to execute malicious code during installation.
What should I do about MAL-2026-1283?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.