Malicious code in tpretoolproof (PyPI)

tpretoolproof Updated 02 Oct 2025

Summary

25/02/2023
CRITICAL
No i
Critical
Not published

MAL-2023-7577: Malicious code in tpretoolproof (PyPI). Affected versions are not published. No fix is published. How to fix ↓

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Background

tpretoolproof is a package available on PyPI that provides a set of tools for proofing and validating TPRE files. It is commonly used in Python projects that involve handling TPRE files. However, this package has been found to contain malicious code, which poses a significant security risk to any project that includes it.

Vulnerability Detail

The tpretoolproof 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 tpretoolproof allows attackers to gain unauthorized access to sensitive information, potentially leading to data breaches, privacy violations, and other malicious activities.

How To Fix

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

pip uninstall tpretoolproof

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 tpretoolproof package and replace it with a secure alternative.

Conclusion

The tpretoolproof package on PyPI has been compromised and contains malicious code. It is crucial to remove this package from your project and replace it with a trusted alternative to mitigate the risk of unauthorized access and potential data breaches. Regularly monitoring and updating the packages used in your project is essential to ensure the security of your software. For further support and assistance in vulnerability remediation, please contact DevNack.com.

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FAQ

This vulnerability allows attackers to execute malicious code and gain unauthorized access to sensitive information in your project. It can lead to data breaches, privacy violations, and other malicious activities.

There is no fix available for tpretoolproof itself. The recommended solution is to remove the package from your project and replace it with a trusted alternative.

You can use vulnerability monitoring tools like Vulert (https://vulert.com) to check if your application is affected by this vulnerability. Additionally, regularly reviewing and updating the packages used in your project is crucial to mitigate the risk of such vulnerabilities.

There have been reports of the EsqueleSquad group publishing malicious packages, including tpretoolproof. While specific instances of exploitation may not be publicly documented, it is essential to take immediate action to remove the vulnerable package from your project.

For more information about this vulnerability and its impact, you can reach out to info@devnack.com or visit the Vulert playground at Vulert Scanner.

How To Fix

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

pip uninstall tpretoolproof

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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