Malicious code in toolpep (PyPI)

toolpep Updated 02 Oct 2025

Summary

24/02/2023
CRITICAL
No i
Critical
Not published

MAL-2023-6887: Malicious code in toolpep (PyPI). Affected versions are not published. No fix is published. How to fix ↓

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Background

The toolpep package is an open-source Python package available on PyPI. It provides functionality for performing various tasks related to tools and utilities. The package is widely used in Python projects for its convenience and ease of use. However, the package has been found to contain malicious code, which poses a significant security risk to users who install and use it.

Vulnerability Detail

The toolpep package has been identified as containing malicious code introduced in version 0. This malicious code was discovered by the Checkmarx security team. The code is designed to execute spyware and information-stealing malware on the user's system. The malicious code can be triggered when the package is installed or used in a Python project. This can lead to unauthorized access to sensitive information, compromise of user data, and potential damage to the user's system.

How To Fix

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

pip uninstall toolpep

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

There is no known workaround for this vulnerability. It is essential to remove the toolpep package and take the necessary steps to secure your system.

Conclusion

The toolpep package has been found to contain malicious code that can execute spyware and information-stealing malware. It is crucial to remove the package from your Python project and take steps to secure your system. For further support on vulnerability remediation, please contact DevNack.com.

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FAQ

The toolpep package is an open-source Python package that provides functionality for performing various tasks related to tools and utilities.

The malicious code in toolpep is designed to execute spyware and information-stealing malware on the user's system. It can be triggered when the package is installed or used in a Python project.

Using the toolpep package with the malicious code can lead to unauthorized access to sensitive information, compromise of user data, and potential damage to the user's system.

To fix the vulnerability, it is recommended to remove the toolpep package from your Python project and any dependencies that rely on it. Additionally, scan your system for any signs of compromise and take appropriate security measures.

To prevent similar vulnerabilities, it is advisable to update your security software regularly, keep it up to date, and be cautious when installing and using open-source packages.

How To Fix

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

pip uninstall toolpep

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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