Malicious Code Injection in utomo-tiwul13-riris Package

utomo-tiwul13-riris Updated 27 Nov 2025

Summary

11/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-91650: Malicious code in utomo-tiwul13-riris (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The utomo-tiwul13-riris package is part of the npm ecosystem and is associated with the tea.xyz token reward campaign. This package is designed to facilitate the generation and publication of derivative packages, which are often used to inflate developer reputation scores for token rewards. However, it has been identified as containing malicious code that compromises its integrity and the security of applications relying on it.

Vulnerability Detail

The vulnerability originates from the malicious payload embedded in the utomo-tiwul13-riris package. This payload modifies the package.json file by removing private flags, altering version numbers, and generating random package names, which leads to the continuous republishing of variants. This behavior not only pollutes the npm registry but also poses a risk to developers who may unknowingly use these compromised packages, potentially leading to security breaches in their applications.

How To Fix

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

npm uninstall utomo-tiwul13-riris

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 avoid using the utomo-tiwul13-riris package and look for alternative packages that provide similar functionality without the associated risks. Additionally, you can monitor your package-lock.json file for any unexpected changes or additions that may indicate the presence of malicious packages.

Conclusion

The utomo-tiwul13-riris package has been identified as containing malicious code that poses significant risks to developers and their applications. It is crucial to take immediate action to remove this package and monitor for any similar vulnerabilities in the future. Utilizing tools like Vulert can aid in maintaining the security of your software.

See every vulnerability recorded for utomo-tiwul13-riris →

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FAQ

It is an npm package associated with the tea.xyz token reward campaign, designed to generate and publish derivative packages.

The malicious code modifies your package.json file and can lead to the republishing of compromised packages, potentially introducing security vulnerabilities.

You can use the Vulert platform to monitor and alert for open-source vulnerabilities in your software. Visit Vulert Scanner to check your application without any signup.

Uninstall the package immediately and review your dependencies for any other potentially compromised packages.

Regularly update your dependencies, monitor your package-lock.json file, and utilize tools like Vulert to stay informed about vulnerabilities.

How To Fix

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

npm uninstall utomo-tiwul13-riris

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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