Malicious code in libcraftstringcc (PyPI)

libcraftstringcc Updated 02 Oct 2025

Summary

25/02/2023
CRITICAL
No i
Critical
Not published

MAL-2023-3950: Malicious code in libcraftstringcc (PyPI). Affected versions are not published. No fix is published. How to fix ↓

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Background

libcraftstringcc is a Python package available on PyPI. It is designed to provide string manipulation functions for crafting purposes. The package is widely used in various Python projects.

Vulnerability Detail

A malicious code injection has been discovered in the libcraftstringcc package. The code was introduced in version 0 and is present in all subsequent versions. The vulnerability allows attackers to execute spyware and information-stealing malware on systems where the package is installed. The malicious code can be triggered by certain actions or inputs, leading to unauthorized access to sensitive information and potential compromise of the affected system.

How To Fix

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

pip uninstall libcraftstringcc

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 crucial to update the package to a secure version as soon as possible.

Conclusion

The libcraftstringcc package contains a malicious code injection vulnerability that can lead to unauthorized access and compromise of systems. It is crucial to update the package to a secure version as soon as possible. For further support on vulnerability remediation, you can contact DevNack.com.

See every vulnerability recorded for libcraftstringcc →

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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.

Restricting actions or inputs may help reduce the risk of triggering the malicious code, but it is not a foolproof solution. The recommended approach is to update the libcraftstringcc package to a secure version.

There have been reports of the malicious code being actively exploited in the wild. It is crucial to update the package to a secure version to protect your system from potential attacks.

Specific instances of data breaches or compromised systems directly attributed to this vulnerability have not been reported. However, the presence of the malicious code poses a significant risk to the security and integrity of affected systems.

This vulnerability was discovered by the Checkmarx security research team. They have been actively monitoring and identifying malicious packages in various open-source ecosystems.

How To Fix

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

pip uninstall libcraftstringcc

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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