Malicious Code Detected in flipcup Package - Security Alert

flipcup Updated 02 Oct 2025

Summary

14/08/2025
CRITICAL
No i
Critical
Not published

MAL-2025-20701: Malicious code in flipcup (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The flipcup package is an npm library designed for specific functionalities within JavaScript applications. It is commonly used for various tasks, but its recent discovery of malicious code poses a significant risk to users. This vulnerability can lead to unauthorized access or manipulation of application data, making it crucial for developers to be aware of its implications.

Vulnerability Detail

The vulnerability in the flipcup package arises from the inclusion of malicious code that can compromise the security of applications utilizing this library. This code was introduced in all versions starting from 0, potentially allowing attackers to exploit affected applications. The ramifications include data breaches, unauthorized access, and the potential for further exploitation within the software ecosystem.

How To Fix

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

npm uninstall flipcup

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, consider removing the flipcup package from your project until a secure version is released. You can do this by executing: npm uninstall flipcup.

Conclusion

The flipcup package has been found to contain malicious code, posing a serious risk to applications that utilize it. It is essential for developers to update or remove this package to mitigate potential security threats. Regular monitoring and vulnerability checks, such as those offered by Vulert, can help maintain application security.

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FAQ

The flipcup package is an npm library used in JavaScript applications for various functionalities.

The vulnerability involves the presence of malicious code that can compromise application security.

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

If immediate updates are not possible, consider uninstalling the flipcup package as a temporary measure.

The vulnerability was identified by Amazon Inspector, a security tool that helps in finding vulnerabilities in software.

How To Fix

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

npm uninstall flipcup

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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