Critical Malicious Code Vulnerability in sha256-validator-pack (npm)

sha256-validator-pack Updated 02 Oct 2025

Summary

22/07/2025
CRITICAL
No i
Critical
Not published

MAL-2025-6199: Malicious code in sha256-validator-pack (npm). Affects sha256-validator-pack versions 1.3.2 – 1.3.4. No fix is published. How to fix ↓

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Background

The sha256-validator-pack is an npm package designed to validate SHA-256 hashes. It is commonly used in applications that require secure data integrity checks. However, this package has been compromised, embedding malicious code that can lead to severe security breaches. Users of this package are at risk of having their systems fully compromised, with potential unauthorized access to sensitive data.

Vulnerability Detail

The vulnerability originates from the inclusion of embedded malicious code within the sha256-validator-pack. This code can compromise any computer that has the package installed, allowing attackers to gain full control over the system. The ramifications include unauthorized access to sensitive information, potential data breaches, and the risk of further malware installation. Users are advised to treat any system with this package as compromised and take immediate action.

How To Fix

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

npm uninstall sha256-validator-pack

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 best workaround is to uninstall the sha256-validator-pack from your project. You can do this by running the following command in your terminal: npm uninstall sha256-validator-pack. This will help mitigate the risk until a secure version is released.

Conclusion

The sha256-validator-pack npm package contains embedded malicious code that poses a significant security risk. Users must take immediate action to uninstall the package and secure their systems. Regular monitoring and updates are essential to maintain the integrity of your applications.

See every vulnerability recorded for sha256-validator-pack →

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FAQ

Immediately uninstall the package and rotate any sensitive information stored on the affected system.

You can use Vulert to monitor and alert for open-source vulnerabilities in your software. Visit Vulert Scanner to check your application without needing to sign up.

Failing to address this vulnerability can lead to unauthorized access to your system, data breaches, and potential further malware infections.

As of now, there is no patched version available. Users should uninstall the package until a secure version is released.

Vulert uses the package-lock.json file to monitor and alert in real-time for open-source vulnerabilities, providing an easy way to stay informed about potential risks.

How To Fix

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

npm uninstall sha256-validator-pack

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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