Critical Malicious Code Vulnerability in vue-scoped-css Package

vue-scoped-css Updated 18 Mar 2026

Summary

18/03/2026
CRITICAL
No i
Critical
Not published

MAL-2026-1538: Malicious code in vue-scoped-css (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

vue-scoped-css is an npm package designed to enable scoped CSS in Vue.js applications, allowing developers to write CSS that is scoped to a specific component. This package simplifies the styling process by preventing CSS conflicts in larger applications. However, it has been identified as containing malicious code, posing significant security risks to any application utilizing it.

Vulnerability Detail

The vulnerability originates from the presence of embedded malicious code within the vue-scoped-css package. This code can compromise any computer that has the package installed, potentially granting unauthorized access to sensitive information such as secrets and keys. The ramifications of this vulnerability are severe, as it could lead to complete control of the affected system by an external entity, making it critical for users to take immediate action.

How To Fix

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

npm uninstall vue-scoped-css

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 are no specific workarounds available for this vulnerability other than removing the affected package. It is advisable to look for alternative packages that provide similar functionality without the associated risks.

Conclusion

The vue-scoped-css package has been identified as containing malicious code that poses a significant security risk. Immediate removal of the package is necessary to protect your system and sensitive information. Users are encouraged to seek alternative solutions and utilize tools like Vulert for ongoing vulnerability monitoring.

See every vulnerability recorded for vue-scoped-css →

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FAQ

vue-scoped-css is an npm package that allows developers to write scoped CSS for Vue.js components, preventing style conflicts.

The malicious code can compromise your system, potentially allowing unauthorized access to sensitive information and control over your application.

You should immediately uninstall the vue-scoped-css package and rotate any sensitive information stored on your system.

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

You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software using just package-lock.json. You can check your application for vulnerabilities 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 vue-scoped-css

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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