MAL-2025-191894 Malicious code in testingpkgja (PyPI)
Malicious package
Published
MAL-2025-191894 is a malicious package: testingpkgja (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-2025-191894/ (Markdown: https://insights.sbomify.com/MAL-2025-191894/index.md)
- Package
- testingpkgja
- Registry
- PyPI
What is MAL-2025-191894?
MAL-2025-191894 is a malicious package in testingpkgja, published on 23 Nov 2025.
Official description
Package downloads and starts an external executable. The executable starts the Windows calculator application. Considering this and the package description, this is a test of potentially malicious behaviour.
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-2025-191894?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.