Malicious code in toolpull (PyPI)

toolpull Updated 02 Oct 2025

Summary

25/02/2023
CRITICAL
No i
Critical
Not published

MAL-2023-6891: Malicious code in toolpull (PyPI). Affected versions are not published. No fix is published. How to fix ↓

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Background

toolpull is a package available on PyPI, which is the Python Package Index. It is used for [provide brief description of the package's functionality and key attributes]. Unfortunately, this package has been found to contain malicious code.

Vulnerability Detail

The vulnerability in toolpull arises from the presence of malicious code in the package. The code was introduced in version 0 and has been identified by Checkmarx. The malicious code is part of a larger campaign by the EsqueleSquad group, who have published nearly 6000 malicious PyPi and NPM packages. These packages execute spyware and information-stealing malware. The specific impact of the malicious code in toolpull may vary, but it poses a significant risk to the security and integrity of systems that use this package.

How To Fix

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

pip uninstall toolpull

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

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Workaround

There is no specific workaround mentioned for this vulnerability. However, it is recommended to follow the steps mentioned in the 'how_to_fix' section to mitigate the risk.

Conclusion

The presence of malicious code in toolpull poses a significant security risk. It is crucial to remove the affected version and regularly monitor and update dependencies to mitigate the risk of such vulnerabilities. For further support and assistance in vulnerability remediation, you can reach out to DevNack.com.

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FAQ

You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability. Simply provide your Pipfile.lock file, and Vulert will analyze it for any open-source vulnerabilities, including this one.

The malicious code in toolpull can execute spyware and information-stealing malware. This can result in unauthorized access to sensitive information, data breaches, and potential compromise of the entire system.

Yes, the recommended fix is to remove the affected version of toolpull (version 0) from your project's dependencies. It is also important to regularly update and monitor your dependencies for security vulnerabilities.

This vulnerability was discovered by Checkmarx, a security research company. They have been actively monitoring and identifying malicious packages in various package repositories.

If you come across any suspicious packages or vulnerabilities, you can report them to Checkmarx by contacting supplychainsecurity@checkmarx.com or through their website at https://bit.ly/checkmarx-malicious-packages.

How To Fix

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

pip uninstall toolpull

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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