Critical Malicious Code Vulnerability in cdnhost Package

cdnhost Updated 28 Jan 2026

Summary

28/01/2026
CRITICAL
No i
Critical
Not published

MAL-2026-550: Malicious code in cdnhost (npm). Affects cdnhost versions 0.0.1-security. No fix is published. How to fix ↓

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Background

The cdnhost package is an npm module designed for managing content delivery networks (CDNs). It allows developers to easily integrate CDN services into their applications. However, this package has been compromised, leading to severe security risks for any system that has it installed. The malicious code embedded within can lead to unauthorized access and control over affected systems.

Vulnerability Detail

The vulnerability originates from the presence of malicious code within the cdnhost package, specifically version 0.0.1-security. This code can fully compromise any computer running the package, allowing attackers to access sensitive information such as secrets and keys. The ramifications of this vulnerability are significant, as it can lead to data breaches and unauthorized control over systems. Users are advised to treat any system with this package installed as compromised.

How To Fix

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

npm uninstall cdnhost

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 workaround, ensure that any sensitive data is stored securely and not on systems running the compromised cdnhost package. Regularly monitor your systems for any unauthorized access or changes.

Conclusion

The cdnhost package has been compromised with malicious code, posing a significant security risk to any systems running it. Immediate action is required to uninstall the package and secure any sensitive information. Regular monitoring for vulnerabilities is essential to maintain system integrity.

See every vulnerability recorded for cdnhost →

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FAQ

cdnhost is an npm module used for managing content delivery networks, allowing developers to integrate CDN services into their applications.

The malicious code can fully compromise your system, allowing attackers to access sensitive information and potentially take control of your computer.

You should immediately uninstall the cdnhost package and rotate any secrets or keys stored on the affected system.

No, there is currently no patched version of the cdnhost package available. The only solution is to remove it.

You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software using just package-lock.json. You can check if your application is affected by this vulnerability using the Vulert playground without any signup.

How To Fix

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

npm uninstall cdnhost

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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