Malicious Code Injection in umi-lodeh57-ruro Package

umi-lodeh57-ruro Updated 18 Nov 2025

Summary

11/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-109989: Malicious code in umi-lodeh57-ruro (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The umi-lodeh57-ruro package is part of the npm ecosystem, which is widely used for JavaScript package management. This package, like many others, is intended to facilitate the development and deployment of applications by providing reusable code components. However, it has been identified as part of a malicious campaign that seeks to exploit the npm registry by flooding it with derivative packages that inflate developer reputation scores for token rewards.

Vulnerability Detail

The vulnerability originates from the malicious code embedded within the umi-lodeh57-ruro package. This code is designed to modify the package.json file by removing private flags, altering version numbers, and generating random package names. The malicious payload continuously republishes these variants to pollute the npm registry, posing a significant risk to developers who may unknowingly install these compromised packages. The ramifications include potential exposure to further vulnerabilities, loss of control over package integrity, and damage to the reputation of legitimate developers.

How To Fix

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

npm uninstall umi-lodeh57-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, avoid using the umi-lodeh57-ruro package and any packages that may have been derived from it. Regularly audit your npm packages using the command npm audit to identify and address any vulnerabilities in your project.

Conclusion

The umi-lodeh57-ruro package poses a significant security risk due to its malicious code designed to manipulate package integrity and pollute the npm registry. It is essential for developers to remove this package from their projects and utilize tools like Vulert to monitor for vulnerabilities in their dependencies.

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FAQ

The umi-lodeh57-ruro package is an npm package that has been identified as part of a malicious campaign to inflate developer reputation scores through the creation of derivative packages.

If you have the umi-lodeh57-ruro package installed, your project may be at risk of having its package integrity compromised, leading to potential security vulnerabilities and reputation damage.

You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without requiring any signup.

You should uninstall the umi-lodeh57-ruro package immediately using the command npm uninstall umi-lodeh57-ruro and audit your other dependencies for vulnerabilities.

Vulert is a tool that monitors your package-lock.json file for open-source vulnerabilities in real-time, providing alerts for any issues that arise.

How To Fix

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

npm uninstall umi-lodeh57-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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