Malicious Code Injection in mutaus-mansis-saints Package - npm Vulnerability

mutaus-mansis-saints Updated 26 Nov 2025

Summary

12/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-161105: Malicious code in mutaus-mansis-saints (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The mutaus-mansis-saints package is part of the npm ecosystem, which is widely used for JavaScript package management. This package has been identified as part of a malicious campaign that floods the npm registry with derivative packages. These packages are designed to inflate developer reputation scores through automated publishing scripts, which can lead to significant pollution of the npm registry and potential security risks for users.

Vulnerability Detail

The vulnerability originates from the mutaus-mansis-saints package, which contains malicious code that modifies the package.json file to remove private flags and change version numbers. It generates random package names and continuously republishes variants, leading to a polluted npm registry. This can result in developers unknowingly using compromised packages, which may contain further vulnerabilities or malicious payloads.

How To Fix

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

npm uninstall mutaus-mansis-saints

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 remove the mutaus-mansis-saints package from your project by executing the following command: npm uninstall mutaus-mansis-saints. This will prevent any potential exploitation of the vulnerability until a fix is available.

Conclusion

The mutaus-mansis-saints package poses a significant security risk due to its malicious code that modifies package configurations and floods the npm registry. It is crucial to take immediate action by updating or removing the package to protect your project from potential exploitation.

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FAQ

The mutaus-mansis-saints package is an npm package that has been identified as part of a malicious campaign to inflate developer reputation scores.

This vulnerability can lead to the use of compromised packages in your project, which may introduce further security risks and instability.

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

If you cannot update the package, consider removing it from your project and looking for a secure alternative to avoid potential risks.

Regularly monitor your dependencies using tools like Vulert and keep your packages updated to minimize the risk of vulnerabilities.

How To Fix

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

npm uninstall mutaus-mansis-saints

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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