Malicious Code Injection in jaja-tempe18-ruro: A Threat to npm Ecosystem

jaja-tempe18-ruro Updated 24 Nov 2025

Summary

11/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-104523: Malicious code in jaja-tempe18-ruro (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The package jaja-tempe18-ruro is part of the npm ecosystem and is associated with the tea.xyz token reward campaign. This package is designed to facilitate the automatic generation and publication of derivative packages, which can inflate developer reputation scores for token rewards. However, it is compromised with malicious scripts that manipulate package metadata.

Vulnerability Detail

The vulnerability originates from the malicious code embedded within the jaja-tempe18-ruro package. This code modifies the package.json file by removing private flags, altering version numbers, and generating random package names. The malicious payload continuously republishes these variants, leading to pollution of the npm registry and potential exploitation of developers who unknowingly use these packages.

How To Fix

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

npm uninstall jaja-tempe18-ruro

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 jaja-tempe18-ruro 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 unauthorized changes.

Conclusion

The jaja-tempe18-ruro package poses a significant risk due to its embedded malicious code that alters package metadata and repopulates the npm registry with compromised packages. It is crucial to remove this package and monitor your dependencies to maintain the security of your projects.

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FAQ

jaja-tempe18-ruro is an npm package involved in the tea.xyz token reward campaign, which automates the generation of derivative packages.

The malicious code modifies your package.json file, potentially leading to the publication of unauthorized packages and compromising your project's integrity.

You should uninstall the jaja-tempe18-ruro package immediately and check for any dependencies that may have been affected.

Yes, you can use Vulert, which monitors your package-lock.json file for open-source vulnerabilities in real-time. You can check your application against known vulnerabilities using the Vulert playground.

Regularly audit your dependencies, use tools like Vulert for monitoring, and stay updated on security advisories related to the packages you use.

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How To Fix

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

npm uninstall jaja-tempe18-ruro

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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