---
id: MAL-2026-16377
title: Malicious code in cloushaar-poc-exfil-91827 (PyPI)
summary: Malicious code in cloushaar-poc-exfil-91827 (PyPI)
severity: critical
exploited: true
vendor: cloushaar-poc-exfil-91827
product: cloushaar-poc-exfil-91827
ecosystem: pip
affected:
  - cloushaar-poc-exfil-91827
published: '2026-09-22'
updated: '2026-09-22'
sourceUpdated: '2026-09-22T14:30:06.900315452Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/MAL-2026-16377'
references:
  - url: 'https://bad-packages.kam193.eu/pypi/package/cloushaar-poc-exfil-91827'
  - url: 'https://pypi.org/project/cloushaar-poc-exfil-91827/0.0.1/'
tags:
  - osv
  - pip
  - malware
ingestedAt: '2026-09-24T07:16:01.856Z'
---

## Overview


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

## Source: amazon-inspector (58b36f7c6e3e2e536f43b51acc410985240e6de6d7bb1e1d78126131e888806f)
The package's setup.py, executed automatically during pip install, iterates a hardcoded list of installer-side filesystem paths (/flag, /flag.txt, /app/flag, /root/flag, and similar candidates), reads their contents, and transmits them via urllib.request.urlopen as a query-string parameter to the hardcoded endpoint https://webhook.site/f41d2013-dd84-4139-85f8-8e989e0761b8. The webhook.site host is an anonymous request-collector controlled by whoever provisioned that endpoint. The name and version suggest a proof-of-concept exfiltration package, but the shipped code performs real install-time filesystem reads and outbound HTTP exfiltration against any host that runs pip install on this artifact.

## Source: kam193 (8ec6abf4fcd51274f6bf53cece87bc47051b0751b117e137c68d964b05753e16)
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.


## Affected packages

- `cloushaar-poc-exfil-91827`

## Remediation

Refer to the advisory for the patched release.