---
id: MAL-2026-6733
title: Malicious code in epic-build-scripts (PyPI)
summary: Malicious code in epic-build-scripts (PyPI)
severity: none
vendor: epic-build-scripts
product: epic-build-scripts
ecosystem: pip
affected:
  - epic-build-scripts
published: '2026-07-02'
updated: '2026-07-08'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/MAL-2026-6733'
references:
  - url: 'https://bad-packages.kam193.eu/pypi/package/epic-build-scripts'
  - url: 'https://pypi.org/project/epic-build-scripts/99999.0.0/'
tags:
  - osv
  - pip
ingestedAt: '2026-07-08T18:25:54.788Z'
---

## Overview


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

## Source: amazon-inspector (14d466b50466bb93e6e9130d18e67b680c7255beecafe16043dc5ee51bfec886)
On `import epic_build_scripts`, the package's top-level __init__ spawns a background thread that POSTs a JSON payload containing socket.gethostname(), the USER/USERNAME environment variable, and os.getcwd() to the hardcoded bare-IP HTTP endpoint http://109.123.247.172/pypi. The beacon fires automatically whenever the module is loaded, with no user consent, no documented purpose, no configurability, and errors are silently swallowed. The destination is a plaintext-HTTP bare IP unrelated to any publisher infrastructure, and the collected fields are installer host-identity reconnaissance data typical of the initial-recon stage of a supply-chain attack.

## Source: kam193 (93043b3f00a64c66fb0680256387471b656f222556c282c9cb1680347f14fae8)
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.


## Affected packages

- `epic-build-scripts`

## Remediation

Refer to the advisory for the patched release.