Malicious Code Detected in cardinal-cors-client Package

cardinal-cors-client Updated 02 Oct 2025

Summary

14/08/2025
CRITICAL
No i
Critical
Not published

MAL-2025-16545: Malicious code in cardinal-cors-client (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The cardinal-cors-client package is an npm library designed to facilitate Cross-Origin Resource Sharing (CORS) in web applications. It allows developers to easily manage and configure CORS settings, enabling secure interactions between different domains. However, this package has been found to contain malicious code, posing significant risks to applications that utilize it.

Vulnerability Detail

The vulnerability in the cardinal-cors-client package arises from the inclusion of malicious code that can compromise the security of applications using this library. This code may lead to unauthorized access, data breaches, or other harmful actions within the affected systems. The malicious nature of this code was identified by Amazon Inspector, highlighting the importance of scrutinizing third-party packages for security risks.

How To Fix

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

npm uninstall cardinal-cors-client

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 using alternative packages that provide similar CORS functionalities without the associated risks. Review your project's dependencies and replace cardinal-cors-client with a trusted library that has a good security track record.

Conclusion

The discovery of malicious code in the cardinal-cors-client package underscores the importance of vigilance when using third-party libraries. Developers should take immediate action to remove this package and consider alternatives to safeguard their applications against potential threats.

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FAQ

The cardinal-cors-client package is an npm library that helps manage Cross-Origin Resource Sharing (CORS) settings in web applications.

The malicious code found in the cardinal-cors-client package can potentially lead to unauthorized access and data breaches.

You can use Vulert, which monitors open-source vulnerabilities in your software. Check your application against the vulnerability using the Vulert playground at Vulert Scanner.

Currently, there is no patched version of the cardinal-cors-client package. It is recommended to uninstall the package until a secure alternative is found.

If you have used the cardinal-cors-client package, uninstall it immediately and consider using a different library that provides similar functionality without the security risks.

How To Fix

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

npm uninstall cardinal-cors-client

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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