MAL-2025-192391 Malicious code in bignum (PyPI)
Malicious package
Published
MAL-2025-192391 is a malicious package: bignum (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-2025-192391/ (Markdown: https://insights.sbomify.com/MAL-2025-192391/index.md)
- Package
- bignum
- Registry
- PyPI
What is MAL-2025-192391?
MAL-2025-192391 is a malicious package in bignum, published on 9 Dec 2025.
Official description
In this incarnation, the package is no longer a clone of networkx, but continues to use the same technique to run secretly remote code and cover tracks
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2025-12-graphnode
Reasons (based on the campaign):
obfuscation
Downloads and executes a remote malicious script.
clones-real-package
What should I do about MAL-2025-192391?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.