Malicious Code Exfiltration in ccxt-bullish Package

ccxt-bullish Updated 08 Feb 2026

Summary

08/02/2026
CRITICAL
No i
Critical
Not published

MAL-2026-809: Malicious code in ccxt-bullish (PyPI). Affects ccxt-bullish versions 1.0.0 – 99.99.99. No fix is published. How to fix ↓

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Background

ccxt-bullish is a Python package available on PyPI that is designed for cryptocurrency trading and market data retrieval. It is intended to facilitate interactions with various cryptocurrency exchanges. However, this package has been identified to contain malicious code that compromises user data and system integrity.

Vulnerability Detail

The vulnerability originates from the package's design, which includes code that exfiltrates sensitive information such as the host's IP address and username upon installation. This malicious behavior is executed by overriding the install command in the setup.py file, allowing it to run arbitrary code during the installation process. The potential ramifications include unauthorized access to user data and possible exploitation of the compromised system.

How To Fix

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

pip uninstall ccxt-bullish

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

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Workaround

As a temporary workaround, you can avoid using the ccxt-bullish package altogether and look for alternative packages that provide similar functionality without the associated risks.

Conclusion

The ccxt-bullish package has been identified as containing malicious code that exfiltrates sensitive information from users' systems. It is crucial to uninstall this package and seek alternatives to protect your data and system integrity. Always stay informed about updates and patches for any packages you use.

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FAQ

ccxt-bullish is a Python library designed for cryptocurrency trading and market data retrieval.

The vulnerability allows the package to exfiltrate sensitive information from your system, potentially leading to unauthorized access.

You should uninstall the package immediately and consider using a secure alternative.

As of now, there is no patched version available. It is advisable to monitor the package repository for updates.

You can use Vulert, which monitors and alerts in real-time for open-source vulnerabilities. Check your application against known vulnerabilities using the Vulert playground at Vulert Scanner.

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How To Fix

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

pip uninstall ccxt-bullish

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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