Malicious Code Injection in fun_leopon_dumbs Package: A Threat to npm Ecosystem
Summary
MAL-2025-102969: Malicious code in fun_leopon_dumbs (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The fun_leopon_dumbs package is part of a broader set of packages that emerged during the tea.xyz token reward campaign. These packages are designed to manipulate the npm registry by automatically generating and publishing derivative packages with randomized names. This behavior is intended to inflate developer reputation scores for rewards associated with the tea protocol, making it a significant concern for developers relying on npm for package management.
Vulnerability Detail
The vulnerability in the fun_leopon_dumbs package stems from its malicious code, which modifies the package.json file to remove private flags and changes version numbers. It generates random package names, often themed around Indonesian culture, and continuously republishes these variants to pollute the npm registry. This not only compromises the integrity of the npm ecosystem but also poses risks to developers who may unknowingly incorporate these malicious packages into their projects.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall fun_leopon_dumbsIf 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 fun_leopon_dumbs package and instead look for alternative packages that provide similar functionality without the associated risks. Additionally, consider using tools like Vulert to monitor your package dependencies for vulnerabilities.
Conclusion
The fun_leopon_dumbs package poses a significant threat to the npm ecosystem due to its malicious code that alters package metadata and floods the registry with harmful variants. It is essential for developers to be vigilant, remove any affected packages, and utilize tools like Vulert to monitor for vulnerabilities in their projects.
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FAQ
fun_leopon_dumbs is an npm package that is part of a malicious campaign to inflate developer reputation scores through automated publishing of derivative packages.
Incorporating the fun_leopon_dumbs package can compromise your project's integrity by introducing malicious code that modifies your package.json and pollutes the npm registry.
If you have installed the fun_leopon_dumbs package, it is recommended to remove it immediately and check for any other affected packages in your project.
Yes, you can use Vulert, which monitors your package-lock.json file to alert you in real-time for open-source vulnerabilities without requiring code access or installation.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
