---
id: "MAL-2026-16421"
kind: "package"
aliases: ["MAL-2026-16421"]
title: "Malicious code in kerokwis (PyPI)"
severity: "critical"
cvss: null
epss: null
exploited: false
status: "open"
category: "package"
products: [{"name": "kerokwis", "fixed": [], "affected": "= 99", "ecosystem": "pypi"}]
ecosystems: ["pypi"]
tags: ["malicious", "package"]
not_affected_if: []
published_at: "2026-09-22T23:52:06+00:00"
first_seen_at: "2026-10-26T20:51:57+00:00"
updated_at: "2026-10-26T21:10:31+00:00"
sources: [{"source": "osv-malicious", "url": "https://osv.dev/vulnerability/MAL-2026-16421", "first_seen_at": "2026-10-26T20:51:57+00:00"}]
---

# Malicious code in kerokwis (PyPI)

## Affected

- pypi:kerokwis affected = 99 fixed ?

## Timeline

- 2026-10-26T20:51:57+00:00 osv-malicious https://osv.dev/vulnerability/MAL-2026-16421

## From the sources

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_-= Per source details. Do not edit below this line.=-_

## Source: kam193 (118186230c3ddb5c23ae32df8fed10655f2c64939daa9a09d5ef71f16884a4f0)
Installing the package or importing the module exfiltrates basic information about the host, and the package has no other purpose.


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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.

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