Malicious Code Exploit in andi-semur44-ruro: A Threat to npm Packages

andi-semur44-ruro Updated 27 Nov 2025

Summary

11/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-99460: Malicious code in andi-semur44-ruro (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

andi-semur44-ruro is an npm package that is part of a broader campaign aimed at manipulating the npm registry for token rewards associated with the tea.xyz protocol. This package, like others in the campaign, is designed to generate and publish derivative packages with randomized names, which can mislead developers and inflate reputation scores.

Vulnerability Detail

The vulnerability stems from the presence of malicious code within the andi-semur44-ruro package. This code modifies the package.json file to remove private flags, alters version numbers, and generates random package names, which can lead to the pollution of the npm registry. The malicious payload is part of a strategy to automate the creation and publication of numerous variants of the package, ultimately compromising the integrity of the npm ecosystem.

How To Fix

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

npm uninstall andi-semur44-ruro

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, you can avoid using the andi-semur44-ruro package and any other packages associated with the tea.xyz token reward campaign. Regularly audit your dependencies to ensure no malicious packages are included.

Conclusion

The andi-semur44-ruro package poses a significant threat due to its malicious code designed to manipulate the npm registry. It is essential for developers to remove this package and any similar ones from their projects to maintain the integrity of their applications. Utilizing tools like Vulert can aid in identifying and managing vulnerabilities effectively.

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FAQ

The impact includes potential pollution of the npm registry and the risk of developers unknowingly using compromised packages, which can lead to security breaches.

You can use tools like Vulert to monitor your package-lock.json for vulnerabilities. Visit Vulert Scanner to check your application without needing to sign up.

Uninstall the package immediately and review your project for any other potentially malicious dependencies.

Yes, tools like Vulert can help monitor and alert you in real-time for open-source vulnerabilities in your software.

Regularly audit your dependencies, use trusted sources for packages, and keep your packages updated to the latest versions.

How To Fix

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

npm uninstall andi-semur44-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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