Malicious code in py-studyencodepep (pypi)

py-studyencodepep Updated 02 Oct 2025

Summary

25/02/2023
CRITICAL
No i
Critical
Not published

MAL-2023-5659: Malicious code in py-studyencodepep (PyPI). Affected versions are not published. No fix is published. How to fix ↓

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Background

The py-studyencodepep package is an open-source Python package available on PyPI. It is designed to provide encoding and decoding functionality for studying purposes. The package is commonly used in educational settings and research projects. However, it has been discovered that a malicious code injection has occurred in the package, compromising its integrity and potentially exposing users to security risks.

Vulnerability Detail

The vulnerability in py-studyencodepep is a result of a malicious code injection by the EsqueleSquad group. They have published nearly 6000 malicious PyPi and NPM packages, including py-studyencodepep, which execute spyware and information-stealing malware. 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, data leakage, and potential compromise of the host system. It is crucial to take immediate action to mitigate the risks associated with this vulnerability.

How To Fix

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

pip uninstall py-studyencodepep

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 available for this vulnerability. The best course of action is to remove the py-studyencodepep package and follow the recommended steps for fixing the vulnerability.

Conclusion

The py-studyencodepep package has been found to contain malicious code, posing a significant security risk to users. It is crucial to take immediate action to remove the package and mitigate the potential risks. For further support and assistance in vulnerability remediation, please contact DevNack.com.

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FAQ

py-studyencodepep is an open-source Python package that provides encoding and decoding functionality for studying purposes.

The vulnerability in py-studyencodepep is a result of a malicious code injection by the EsqueleSquad group, who published the package with spyware and information-stealing malware.

The potential risks of this vulnerability include unauthorized access to sensitive information, data leakage, and compromise of the host system.

To fix the vulnerability, it is recommended to remove the py-studyencodepep package from your Python environment and scan your system for any signs of compromise.

No, there is no specific workaround available. The best course of action is to remove the py-studyencodepep package and follow the recommended steps for fixing the vulnerability.

How To Fix

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

pip uninstall py-studyencodepep

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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