Critical Malicious Code Vulnerability in @twilio-client/twilio-client Package

@twilio-client/twilio-client Updated 03 Mar 2026

Summary

03/03/2026
CRITICAL
No i
Critical
Not published

MAL-2026-1187: Malicious code in @twilio-client/twilio-client (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The @twilio-client/twilio-client package is a JavaScript library used for integrating Twilio's communication services into applications. It provides functionalities for voice and video calls, messaging, and other communication features. However, recent findings have revealed that this package contains malicious code, making it a significant security risk for any application that utilizes it.

Vulnerability Detail

The vulnerability originates from the presence of embedded malicious code within the @twilio-client/twilio-client package. This code can compromise any computer running the package, potentially granting unauthorized access to sensitive information, including secrets and keys. The implications of this vulnerability are severe, as it may lead to complete system compromise, data breaches, and unauthorized control over the affected systems.

How To Fix

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

npm uninstall @twilio-client/twilio-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

Currently, the only effective workaround is to uninstall the @twilio-client/twilio-client package from your project. You can do this by running the following command in your terminal: npm uninstall @twilio-client/twilio-client.

Conclusion

The discovery of malicious code within the @twilio-client/twilio-client package poses a critical security threat to any application utilizing it. Immediate action is required to remove the package and secure any sensitive information. Regular monitoring for vulnerabilities, such as through Vulert, is essential for maintaining application security.

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FAQ

Immediately uninstall the package and rotate any secrets or keys stored on the affected system.

You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. Check your application by visiting the Vulert playground at Vulert Scanner.

As of now, there is no patched version available. The best course of action is to remove the package entirely.

Failing to address this vulnerability can lead to complete system compromise, data breaches, and unauthorized access to sensitive information.

It is highly discouraged to continue using the package, as the malicious code poses a significant risk regardless of the data stored.

How To Fix

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

npm uninstall @twilio-client/twilio-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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