Malicious code in stringultra (PyPI)

stringultra Updated 02 Oct 2025

Summary

25/02/2023
CRITICAL
No i
Critical
Not published

MAL-2023-6821: Malicious code in stringultra (PyPI). Affected versions are not published. No fix is published. How to fix ↓

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Background

Stringultra is a Python package available on PyPI. It is designed to provide additional string manipulation functionality to Python developers. The package offers various features such as string concatenation, substring extraction, and case conversion. However, the package has been found to contain malicious code, making it a potential security risk for users.

Vulnerability Detail

The stringultra package has been identified as part of a larger group of nearly 6000 malicious PyPI and NPM packages published by the EsqueleSquad group. These packages execute spyware and information-stealing malware. The specific vulnerability in stringultra allows attackers to potentially compromise user systems and steal sensitive information. The malicious code can be triggered when using certain functions or methods provided by the package.

How To Fix

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

pip uninstall stringultra

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 stringultra package and follow the recommended steps to ensure the security of your system.

Conclusion

The stringultra package on PyPI has been found to contain malicious code as part of a larger group of malicious packages. This vulnerability poses a significant risk to user systems, potentially leading to data theft and compromise. It is crucial to remove the package, scan for any signs of compromise, and follow recommended security measures. For further support and assistance, 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 in real-time and alert you if any open-source vulnerabilities, including this one, are found.

Yes, you can continue using other packages from PyPI. However, it is crucial to regularly update and review the packages you use to ensure they are from trusted sources and free from known vulnerabilities.

If you discover other malicious packages on your system, it is recommended to remove them immediately. Additionally, perform a thorough system scan using reputable security software to identify and mitigate any potential threats.

To prevent similar vulnerabilities, it is important to follow best practices for package management. Only use packages from trusted sources, regularly update your packages and dependencies, and keep your security software up to date. Additionally, consider using tools like Vulert to proactively monitor and detect vulnerabilities in your software.

For more information about this vulnerability and its impact, you can reach out to info@devnack.com. They can provide further support and guidance on vulnerability remediation.

How To Fix

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

pip uninstall stringultra

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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