MAL-2025-191771 Malicious code in jython-file (PyPI)
Malicious package
Published
MAL-2025-191771 is a malicious package: jython-file (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-2025-191771/ (Markdown: https://insights.sbomify.com/MAL-2025-191771/index.md)
- Package
- jython-file
- Registry
- PyPI
What is MAL-2025-191771?
MAL-2025-191771 is a malicious package in jython-file, published on 7 Jul 2025.
Official description
Package attempts to load in an obfuscated way a code from a file (not included in the package) as well as inject a dynamic library to the Python dynamic libs directories.
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2025-07-jython-file
Reasons (based on the campaign):
modify-system-without-consent
obfuscation
What should I do about MAL-2025-191771?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.