Cryptocurrency Mining Malware in py-sysbench Package

py-sysbench Updated 08 Mar 2026

Summary

08/03/2026
CRITICAL
No i
Critical
Not published

MAL-2026-1280: Malicious code in py-sysbench (PyPI). Affects py-sysbench versions 1.0.0. No fix is published. How to fix ↓

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Background

The py-sysbench package is a Python library designed for benchmarking and performance testing of various systems. It is commonly used in development and testing environments to evaluate the performance of databases and other applications. However, the package has been compromised, leading to a significant security vulnerability that allows malicious actors to exploit it for unauthorized cryptocurrency mining.

Vulnerability Detail

The vulnerability originates from a malicious code embedded within the py-sysbench package, specifically in version 1.0.0. Upon importing the module, it initiates a silent cryptocurrency mining operation in the background, targeting a hardcoded wallet. This not only consumes system resources but also poses a risk of financial loss to users whose systems are compromised. The malicious intent is clear, as it falls under the category of cryptominers, which are designed to exploit user systems without consent.

How To Fix

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

pip uninstall py-sysbench

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 measure, users can avoid importing the py-sysbench package until a secure version is released. Additionally, monitoring system resource usage can help identify any unauthorized mining activities.

Conclusion

The py-sysbench package has been compromised with malicious code that enables unauthorized cryptocurrency mining. Users are advised to uninstall the affected version and monitor their systems for any signs of exploitation. Utilizing tools like Vulert can help maintain the security of your software environment.

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FAQ

py-sysbench is a Python library used for benchmarking and performance testing of systems, particularly databases.

The malicious code initiates cryptocurrency mining in the background, consuming system resources and potentially leading to financial loss.

You should uninstall the package immediately using the command 'pip uninstall py-sysbench' and monitor your system for any unusual activity.

Yes, Vulert can monitor and alert in real-time for open-source vulnerabilities in your software. You can check if your application is affected by this vulnerability using the Vulert playground without any signup.

Always download packages from trusted sources, check for known vulnerabilities, and consider using tools like Vulert for real-time monitoring.

How To Fix

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

pip uninstall py-sysbench

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 →

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