Malicious code in studystr (PyPI)

studystr Updated 02 Oct 2025

Summary

25/02/2023
CRITICAL
No i
Critical
Not published

MAL-2023-6836: Malicious code in studystr (PyPI). Affected versions are not published. No fix is published. How to fix ↓

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Background

The studystr package is an open-source Python package available on PyPI. It is designed to provide functionality for studying and analyzing strings. The package is widely used in various Python projects and provides a range of features for string manipulation and analysis. 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 studystr 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 studystr allows the execution of malicious code, which can lead to unauthorized access, data theft, and potential compromise of the host system. The malicious code can be triggered when using certain functions or methods provided by the studystr package.

How To Fix

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

pip uninstall studystr

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 studystr package and take necessary security measures to mitigate the risk.

Conclusion

The studystr package on PyPI has been found to contain malicious code, posing a significant security risk to users. It is crucial to remove the package from your Python environment and take necessary security measures to protect your data and systems. For further support on vulnerability remediation, you can 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. The Vulert Playground allows you to analyze your Pipfile.lock and provides real-time alerts for open-source vulnerabilities.

The potential consequences of this vulnerability include unauthorized access to sensitive data, data theft, and compromise of the host system. The malicious code can execute spyware and information-stealing malware, posing a significant security risk.

Yes, the recommended fix is to remove the studystr package from your Python environment and scan your system for any signs of compromise. It is also crucial to keep your security software up to date to detect and prevent potential threats.

No, there are no known workarounds for this vulnerability. It is essential to remove the studystr package and take necessary security measures to mitigate the risk.

To ensure the security of your Python environment, it is recommended to regularly update your packages, use reputable sources for package installation, and keep your security software up to date. Additionally, scanning your system for vulnerabilities using tools like Vulert can help identify and mitigate potential risks.

How To Fix

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

pip uninstall studystr

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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