Critical Malware Threat in xwormclient Package: Remote Code Execution Vulnerability

xwormclient Updated 03 Dec 2025

Summary

03/09/2025
CRITICAL
No i
Critical
Not published

MAL-2025-191938: Malicious code in xwormclient (PyPI). Affects xwormclient versions 0.1.3. No fix is published. How to fix ↓

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Background

xwormclient is a Python package available on PyPI that is intended for client-side operations. However, it has been compromised to include malicious code that downloads and executes malware. This vulnerability poses a significant risk to users who may unknowingly install the package, leading to potential data breaches and system compromises.

Vulnerability Detail

The vulnerability originates from a malicious actor, identified as kam193, who has embedded code within the xwormclient package that downloads and executes various malware executables from remote sources. This malicious behavior can lead to severe consequences, including unauthorized access to sensitive information, system damage, and further exploitation of the affected systems. The package version 0.1.3 is specifically noted for this issue, and the malicious code is triggered upon importing the module.

How To Fix

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

pip uninstall xwormclient

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

As a temporary workaround, users should avoid using the xwormclient package until a secure version is released. Additionally, consider using alternative packages that provide similar functionality without the associated risks.

Conclusion

The xwormclient package has been identified as a vector for malware due to a vulnerability that allows remote code execution. Users are strongly advised to uninstall the affected version and monitor for updates. Utilizing tools like Vulert can help in identifying vulnerabilities in open-source software.

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FAQ

xwormclient is a Python package designed for client-side operations, but it has been compromised to include malicious code.

The vulnerability allows the package to download and execute malware from remote sources when the module is imported.

The risks include unauthorized access to sensitive data, system damage, and further exploitation by malicious actors.

You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability without any signup.

Uninstall the package immediately using the command pip uninstall xwormclient and refrain from using it until a secure version is available.

How To Fix

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

pip uninstall xwormclient

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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