Malicious code in ultramc (PyPI)

ultramc Updated 02 Oct 2025

Summary

23/02/2023
CRITICAL
No i
Critical
Not published

MAL-2023-7760: Malicious code in ultramc (PyPI). Affected versions are not published. No fix is published. How to fix ↓

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Background

ultramc is a Python package available on PyPI. It is used for [provide brief description of the package's functionality and key attributes]. However, ultramc is currently vulnerable to a malicious code injection.

Vulnerability Detail

The vulnerability in ultramc (PyPI) stems from the inclusion of a malicious code in the package. This code, introduced in version 0, is part of a larger campaign by the EsqueleSquad group. The malicious code executes spyware and information-stealing malware, posing a significant risk to users who install and use ultramc.

How To Fix

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

pip uninstall ultramc

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 to a non-malicious version of ultramc as soon as possible.

Conclusion

The presence of malicious code in ultramc poses a significant security risk to users. It is crucial to update to a non-malicious version of the package as soon as possible. For further support on vulnerability remediation, you can contact DevNack.com.

See every vulnerability recorded for ultramc →

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FAQ

ultramc is a Python package available on PyPI that [provide brief description of the package's functionality and key attributes].

The malicious code injected into ultramc executes spyware and information-stealing malware, putting users at risk of data compromise and unauthorized access.

You can use the Vulert Playground at [https://vulert.com/scanner] to check if your version of ultramc is affected by this vulnerability. Simply enter your Pipfile.lock and the tool will provide real-time alerts for open-source vulnerabilities.

Yes, updating ultramc to a version that does not contain the malicious code will fix this vulnerability. Make sure to use the latest version of the package.

This vulnerability was discovered by Checkmarx, a security research company. They have provided detailed information and guidance on addressing this issue.

How To Fix

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

pip uninstall ultramc

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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