Malicious Code Injection in tusya-fsd-frssdeaf Package - npm Vulnerability

tusya-fsd-frssdeaf Updated 26 Nov 2025

Summary

12/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-169419: Malicious code in tusya-fsd-frssdeaf (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The tusya-fsd-frssdeaf 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 aims to exploit npm's publishing system. It is designed to generate and publish numerous derivative packages with altered metadata to manipulate developer reputation scores for token rewards.

Vulnerability Detail

The vulnerability originates from the tusya-fsd-frssdeaf package being linked to a malicious campaign that modifies the package.json file to remove private flags and change version numbers. It generates random package names, primarily themed around Indonesian culture, and continuously republishes these variants, leading to pollution of the npm registry. This can result in security risks for developers who unknowingly install these malicious packages, potentially compromising their applications.

How To Fix

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

npm uninstall tusya-fsd-frssdeaf

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

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Workaround

As a temporary workaround, avoid using the tusya-fsd-frssdeaf package and monitor your dependencies for any similar malicious packages. You can also use tools like Vulert to monitor your project for vulnerabilities. To check if your application is affected, you can utilize the Vulert playground at https://vulert.com/scanner without any signup.

Conclusion

The tusya-fsd-frssdeaf package poses a significant security risk due to its malicious nature. Developers should take immediate action to remove this package and monitor their projects for similar threats. Utilizing tools like Vulert can help maintain the security of your applications.

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FAQ

The tusya-fsd-frssdeaf package is an npm package that has been identified as part of a malicious campaign to inflate developer reputation scores through the publication of derivative packages.

If your application uses the tusya-fsd-frssdeaf package, it may inadvertently include malicious code that can compromise its security and integrity.

You should uninstall the tusya-fsd-frssdeaf package immediately and check your project for any other potentially malicious packages.

Regularly audit your dependencies, use tools like Vulert for real-time monitoring, and stay updated on known vulnerabilities in the npm ecosystem.

Yes, you can use the Vulert playground at Vulert Scanner to check for vulnerabilities in your application without needing to install any software.

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How To Fix

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

npm uninstall tusya-fsd-frssdeaf

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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