Malicious Code Vulnerability in phx-core1 Package

phx-core1 Updated 19 Mar 2026

Summary

18/03/2026
CRITICAL
No i
Critical
Not published

MAL-2026-1810: Malicious code in phx-core1 (npm). Affects phx-core1 versions 8.0.0. No fix is published. How to fix ↓

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Background

phx-core1 is an npm package designed for core functionalities in various applications. It is widely used due to its modular architecture and ease of integration. However, it has recently been identified as having a critical vulnerability that allows for the execution of malicious code, potentially compromising the security of applications that depend on it.

Vulnerability Detail

The vulnerability in phx-core1 stems from the inclusion of malicious code within version 8.0.0 of the package. This code can execute unauthorized actions, leading to data breaches or system compromises. The issue was reported by ReversingLabs and is documented under the ID MAL-2026-1810. Users of this package are at risk if they do not take immediate action to mitigate the threat.

How To Fix

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

npm uninstall phx-core1

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

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Workaround

As a temporary measure, you can remove the phx-core1 package from your project until a secure version is confirmed. Use the following command to uninstall it: npm uninstall phx-core1. This will prevent any malicious code from executing in your application.

Conclusion

The phx-core1 package has a critical vulnerability that allows for the execution of malicious code, posing significant risks to applications that utilize it. Immediate action is required to update the package or remove it temporarily to safeguard your application. Utilize tools like Vulert for ongoing monitoring of vulnerabilities.

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FAQ

The vulnerability involves malicious code that can execute unauthorized actions within applications using the phx-core1 package.

You can use Vulert to monitor and alert for vulnerabilities in your software. Visit Vulert Scanner to check if your application is affected without needing to sign up.

If immediate updates are not possible, consider uninstalling the package as a temporary workaround to mitigate risks.

The vulnerability was reported by ReversingLabs, a cybersecurity firm specializing in threat detection.

Yes, updating to the latest version of phx-core1 will address the vulnerability. Use 'npm install phx-core1@latest' to update.

How To Fix

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

npm uninstall phx-core1

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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