Malicious code in vmmc (PyPI)

vmmc Updated 02 Oct 2025

Summary

24/02/2023
CRITICAL
No i
Critical
Not published

MAL-2023-7882: Malicious code in vmmc (PyPI). Affected versions are not published. No fix is published. How to fix ↓

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Background

The vmmc package is an open-source Python package available on PyPI. It is designed to provide functionality related to vmmc operations. This package is vulnerable to a malicious code injection attack.

Vulnerability Detail

The vmmc package has been found to contain malicious code introduced by the Checkmarx group. This code is capable of executing spyware and information-stealing malware. The malicious code can be triggered when the package is installed or used in a Python project. This poses a significant risk to the security and privacy of users who install and utilize the vmmc package.

How To Fix

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

pip uninstall vmmc

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 specific workaround available for this vulnerability. It is crucial to follow the recommended steps for fixing the issue and ensuring the use of a secure version of the vmmc package.

Conclusion

The vmmc package on PyPI has been found to contain malicious code that can execute spyware and information-stealing malware. It is crucial to take immediate action to remove the affected version and ensure the use of a secure version of the package. For further support on vulnerability remediation, you can contact DevNack.com.

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FAQ

This vulnerability allows the execution of spyware and information-stealing malware, potentially compromising the security and privacy of users.

You can use the Vulert Playground (https://vulert.com/scanner) to check if your application is affected by this vulnerability. Simply provide your Pipfile.lock and it will alert you in real-time for open-source vulnerabilities, including this one.

Yes, the recommended fix is to remove the affected version of the vmmc package and ensure the use of an up-to-date and trusted version.

This vulnerability was discovered by Checkmarx, a security research group.

For more information about this vulnerability, you can contact Checkmarx at supplychainsecurity@checkmarx.com or visit their website at https://bit.ly/checkmarx-malicious-packages.

How To Fix

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

pip uninstall vmmc

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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