Critical Malicious Code Vulnerability in dzyhaxz-libsignal Package

dzyhaxz-libsignal Updated 05 Oct 2026

Summary

05/10/2026
CRITICAL
No i
Critical
Not published

MAL-2026-17623: Malicious code in dzyhaxz-libsignal (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The dzyhaxz-libsignal package is an npm library designed for secure communication, leveraging the Signal Protocol for end-to-end encryption. It is utilized in various applications to ensure privacy and data security. However, this package has been compromised, leading to significant security concerns for any system utilizing it.

Vulnerability Detail

The vulnerability stems from the presence of malicious code embedded within the dzyhaxz-libsignal package. This code can fully compromise any computer that has the package installed, allowing unauthorized access to sensitive information such as secrets and keys. The malicious nature of this code has been confirmed by security researchers, and it poses a severe risk to users and organizations relying on this package for secure communications.

How To Fix

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

npm uninstall dzyhaxz-libsignal

If it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.

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Workaround

Currently, there are no effective workarounds to mitigate the risks posed by this vulnerability other than removing the package entirely. It is crucial to monitor your systems for any signs of compromise following the uninstallation.

Conclusion

The dzyhaxz-libsignal package has been identified as containing malicious code that poses a significant risk to users. Immediate action is required to uninstall the package and secure any sensitive information. Utilizing tools like Vulert can help in monitoring for such vulnerabilities in the future.

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FAQ

You should uninstall the package immediately and rotate any sensitive information stored on the affected system.

You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.

No, there is currently no patched version available for this package. The only course of action is to uninstall it.

Failing to remove the package could lead to unauthorized access to sensitive data and complete compromise of your system.

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How To Fix

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

npm uninstall dzyhaxz-libsignal

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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