Malicious Code Vulnerability in joyboyw Package: Silent Malware Download

joyboyw Updated 05 Dec 2025

Summary

05/12/2025
CRITICAL
No i
Critical
Not published

MAL-2025-192322: Malicious code in joyboyw (PyPI). Affects joyboyw versions 1.0.0 – 1.0.1. No fix is published. How to fix ↓

Free scan

Check if this vulnerability affects your application

Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.

Check my app free

No signup required · Results in about 60 seconds

Upload your dependency manifest or SBOM

Drag & drop your file here or

Java Javascript PHP Python Go Rust Ruby Dart C/C++ Elixir CycloneDX SPDX

Upload a supported dependency manifest or SBOM. No installation or source-code access required.

See supported files and SBOM formats
SBOM sbom.json · bom.json · bom.xml · *.spdx.json · *.cdx.json · *.cdx.xml
Java pom.xml · gradle.lockfile · buildscript-gradle.lockfile
Javascript package-lock.json · yarn.lock · pnpm-lock.yaml
PHP composer.lock
Python poetry.lock · requirements.txt · Pipfile.lock
Go go.mod
Rust Cargo.lock
Ruby Gemfile.lock
Dart pubspec.lock
C/C++ conan.lock
Elixir mix.lock
Enter your work email to receive your report link.

Verify your email to view the full report and start 30 days of continuous monitoring. No credit card required.

Sponsored Lume, the Habilume companion Habilume Habit tracker with a companion that grows with you Complete habits, earn Lume Points, and watch your Lume grow as you stay consistent. App Store Google Play

Background

The joyboyw package, available on PyPI, is designed for specific functionalities within Python applications. However, it has been identified as containing malicious code that poses significant security risks. This vulnerability allows the package to silently download and execute malware, compromising the integrity of systems utilizing it.

Vulnerability Detail

The vulnerability originates from a function within the joyboyw package that enables it to download and execute a remote malicious script without user consent. This behavior is classified as malicious due to its intent to install malware, potentially leading to data theft or system compromise. The affected versions of joyboyw are 1.0.0 and 1.0.1, which contain the malicious code.

How To Fix

This package is malicious. Remove it and rotate any credentials it could have accessed.

pip uninstall joyboyw

If it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.

Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →

Workaround

As a temporary workaround, users can remove the joyboyw package from their environment by executing the command: 'pip uninstall joyboyw'. This will prevent any malicious actions from being executed until a safe version is released.

Conclusion

The joyboyw package has been identified as containing malicious code that can silently download and execute malware. Users are urged to uninstall the affected versions and monitor for any updates or patches to ensure their systems remain secure.

See every vulnerability recorded for joyboyw →

Share this vulnerability

FAQ

joyboyw is a Python package available on PyPI, designed for specific functionalities in Python applications.

The vulnerability allows the joyboyw package to download and execute malware silently, posing a significant security risk.

You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability without requiring any signup.

If you have installed joyboyw, it is advised to uninstall it immediately using 'pip uninstall joyboyw' to mitigate the risk.

A fix may be released in a future version of the joyboyw package. Keep an eye on the package repository for updates.

Sponsored Lume, the Habilume companion Habilume Habit tracker with a companion that grows with you Complete habits, earn Lume Points, and watch your Lume grow as you stay consistent. App Store Google Play

How To Fix

This package is malicious. Remove it and rotate any credentials it could have accessed.

pip uninstall joyboyw

If it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.

Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →

Subscribe to Vulert on Telegram
Daily digest of new CVEs, critical and high severity, affected packages and fixes — plus a weekly roundup.
Join the channel →
Help improve this record
Report an issue or send feedback