Malicious code in py-toolproofpost (pypi)

py-toolproofpost Updated 02 Oct 2025

Summary

25/02/2023
CRITICAL
No i
Critical
Not published

MAL-2023-5698: Malicious code in py-toolproofpost (PyPI). Affected versions are not published. No fix is published. How to fix ↓

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Background

py-toolproofpost is a package available on PyPI that provides functionality for proof-of-concept testing in Python. It is commonly used by developers to validate and verify various aspects of their code. However, this package has been found to contain malicious code, which poses a significant security risk to users who install and use it.

Vulnerability Detail

The py-toolproofpost package has been compromised by the EsqueleSquad group, who published nearly 6000 malicious PyPi and NPM packages. These packages execute spyware and information-stealing malware. The specific vulnerability in py-toolproofpost allows unauthorized access to sensitive information and can potentially lead to data breaches and unauthorized system access.

How To Fix

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

pip uninstall py-toolproofpost

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. Complete removal of the py-toolproofpost package is the only recommended solution.

Conclusion

The py-toolproofpost package on PyPI has been compromised and contains malicious code. This vulnerability can lead to unauthorized access and potential data breaches. It is crucial to remove the package and take appropriate actions to mitigate the risk. For further support and assistance, please contact 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.

This vulnerability can lead to unauthorized access to sensitive information, data breaches, and potential compromise of the entire system. It is crucial to take immediate action to mitigate the risk and protect your data.

Yes, the recommended fix is to remove the py-toolproofpost package from your project and any dependencies that rely on it. Additionally, it is important to scan your system for any signs of compromise and update your security software.

Yes, you can continue using other packages from PyPI. However, it is essential to ensure that you only install trusted and verified packages from reputable sources. Regularly updating your packages and monitoring for any security advisories is also recommended.

If you have any further questions or need assistance with vulnerability remediation, you can reach out to info@devnack.com. They will provide guidance and support to help you address the issue.

How To Fix

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

pip uninstall py-toolproofpost

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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