MAL-2025-192609 Malicious code in f5rest (PyPI)
- Package
- f5rest
- Registry
- PyPI
What is MAL-2025-192609?
MAL-2025-192609 is a malicious package in f5rest, published on 18 Dec 2025.
Official description
Installing the package or importing the module exfiltrates basic information about the host, and the package has no other purpose.
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-standard-pypi-install-pentest
Reasons (based on the campaign):
The package contains code to exfiltrate basic data from the system, like IP or username. It has a limited risk.
The package overrides the install command in setup.py to execute malicious code during installation.
What should I do about MAL-2025-192609?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.