Malicious Code Detected in canvasbars Package - Security Alert

canvasbars Updated 02 Oct 2025

Summary

14/08/2025
CRITICAL
No i
Critical
Not published

MAL-2025-16503: Malicious code in canvasbars (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The canvasbars package is a JavaScript library designed for creating bar charts in web applications. It offers various features for customization and ease of use, making it popular among developers. However, recent findings have revealed that this package contains malicious code, posing significant security risks to applications that utilize it.

Vulnerability Detail

The vulnerability in the canvasbars package originates 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 vulnerability is particularly concerning as it can operate without the user's knowledge, potentially affecting a wide range of applications relying on this package.

How To Fix

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

npm uninstall canvasbars

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, you can avoid using the canvasbars package altogether and consider using alternative libraries for creating bar charts, such as Chart.js or D3.js, which are known for their security and reliability.

Conclusion

The discovery of malicious code in the canvasbars package highlights the importance of regularly monitoring and updating dependencies in software projects. Developers should take immediate action to mitigate risks by removing the affected package and considering secure alternatives.

See every vulnerability recorded for canvasbars →

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FAQ

canvasbars is a JavaScript library used for creating bar charts in web applications.

The malicious code can lead to unauthorized access and potential data breaches in applications using the package.

You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. Visit Vulert Scanner to check if your application is affected without any signup.

It is advisable to remove the canvasbars package and replace it with a secure alternative. If a patched version is released, update it using npm update canvasbars.

Yes, alternatives include Chart.js and D3.js, which provide robust features for creating charts securely.

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How To Fix

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

npm uninstall canvasbars

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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