MAL-2026-16421 Malicious code in kerokwis (PyPI)
- Package
- kerokwis
- Registry
- PyPI
What is MAL-2026-16421?
MAL-2026-16421 is a malicious package in kerokwis, published on 22 Sep 2026.
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-2026-16421?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.