Malicious Code Detected in cscrubber Package - Immediate Action Required

cscrubber Updated 02 Oct 2025

Summary

14/08/2025
CRITICAL
No i
Critical
Not published

MAL-2025-17776: Malicious code in cscrubber (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The cscrubber package is a tool designed for sanitizing and cleaning user input in JavaScript applications. It is widely used in web development to prevent injection attacks by ensuring that data is properly formatted and safe for processing. However, recent findings have revealed that this package contains malicious code, posing a significant risk to applications that rely on it.

Vulnerability Detail

The cscrubber package has been identified to contain malicious code that can compromise the security of applications using it. This vulnerability originated from the inclusion of harmful scripts that can execute unauthorized actions, potentially leading to data breaches or system compromises. The malicious nature of this code means that any application utilizing cscrubber is at risk of exploitation, which could result in severe consequences for both developers and end-users.

How To Fix

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

npm uninstall cscrubber

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, it is advisable to remove the cscrubber package from your project until a secure version is available. You can do this by executing the command: npm uninstall cscrubber. Consider using alternative packages that provide similar functionality without the associated risks.

Conclusion

The discovery of malicious code in the cscrubber package poses a serious threat to applications that utilize it. Immediate action is required to update or remove the package to safeguard your application from potential exploits. Regular monitoring for vulnerabilities is essential to maintain the security of your software.

See every vulnerability recorded for cscrubber →

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FAQ

cscrubber is a JavaScript package used for sanitizing user input to prevent injection attacks in web applications.

The malicious code was identified through security audits and reports from security tools, including Amazon Inspector.

Using the compromised cscrubber package can lead to unauthorized access, data breaches, and potential exploitation of your application.

You can use Vulert, which monitors and alerts in real-time for open-source vulnerabilities using just your package-lock.json file. You can check your application for vulnerabilities using the Vulert playground at Vulert Scanner.

Yes, you can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without requiring any signup.

How To Fix

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

npm uninstall cscrubber

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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