Malicious Code Injection in melted_wren_dumbs Package: A Threat to npm Ecosystem
Summary
MAL-2025-105793: Malicious code in melted_wren_dumbs (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The melted_wren_dumbs package is part of a series of npm packages that emerged during the tea.xyz token reward campaign. These packages are designed to inflate developer reputation scores by automatically generating and publishing derivative packages with randomized names. The malicious nature of these packages poses a significant risk to the integrity of the npm registry and the developers using these packages.
Vulnerability Detail
The vulnerability in the melted_wren_dumbs package originates from its inclusion in a malicious campaign 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 security of applications relying on these packages. The malicious payload can potentially allow unauthorized access to sensitive information or lead to the installation of further malicious dependencies.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall melted_wren_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 melted_wren_dumbs package and any other packages associated with the tea.xyz token reward campaign. Additionally, consider using tools like Vulert to monitor your package-lock.json for vulnerabilities in real-time.
Conclusion
The melted_wren_dumbs package poses a significant threat to the npm ecosystem due to its malicious behavior aimed at inflating developer reputation scores. It is essential for developers to be vigilant and remove such packages from their projects to maintain the security and integrity of their applications.
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FAQ
The melted_wren_dumbs package is part of a malicious npm package campaign aimed at inflating developer reputation scores through automated publishing.
The vulnerability can lead to unauthorized modifications in your package.json file, potentially compromising your application's security and integrity.
You should immediately remove the melted_wren_dumbs package from your project and monitor for any updates or patches.
You can use Vulert, which monitors your package-lock.json for vulnerabilities in real-time without requiring code access or installation.
Yes, you can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without any signup.
