Malicious Code Injection in umi-esdoger19-ruro Package

umi-esdoger19-ruro Updated 18 Nov 2025

Summary

11/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-109974: Malicious code in umi-esdoger19-ruro (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The umi-esdoger19-ruro package is part of a series of npm packages that have been associated with the tea.xyz token reward campaign. These packages are designed to manipulate the npm registry by generating and publishing numerous derivative packages with random names. The primary functionality of these packages is to inflate developer reputation scores for rewards, but they pose significant risks due to their malicious nature.

Vulnerability Detail

The vulnerability in the umi-esdoger19-ruro package stems from its malicious code that modifies the package.json file to remove private flags, alters version numbers, and generates random package names. This behavior leads to the continuous republishing of variants, which pollutes the npm registry and can compromise the integrity of other packages. The origin of this vulnerability is linked to the tea.xyz token reward campaign, which exploits npm's publishing mechanisms to achieve its goals.

How To Fix

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

npm uninstall umi-esdoger19-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 umi-esdoger19-ruro package and any other packages associated with the tea.xyz token reward campaign. Regularly audit your dependencies using tools like npm audit to identify and mitigate risks from malicious packages.

Conclusion

The umi-esdoger19-ruro package poses a significant risk due to its malicious code that alters package metadata and floods the npm registry. It is crucial to remove this package from your project and regularly audit your dependencies to maintain the integrity and security of your application.

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FAQ

The umi-esdoger19-ruro package is an npm package involved in a malicious campaign that generates and publishes numerous derivative packages to inflate developer reputation scores.

This vulnerability can compromise the integrity of your application by introducing malicious code that modifies your package.json and floods the npm registry with unwanted packages.

You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. By uploading your package-lock.json to the Vulert playground, you can check for vulnerabilities without needing to sign up.

If you have installed the umi-esdoger19-ruro package, you should uninstall it immediately using 'npm uninstall umi-esdoger19-ruro' and audit your other dependencies.

Yes, tools like npm audit and Vulert can help you identify and manage vulnerabilities in your project's dependencies.

How To Fix

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

npm uninstall umi-esdoger19-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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