Malicious Code Injection in alyssawilliams Package: npm Vulnerability Overview

alyssawilliams Updated 26 Nov 2025

Summary

12/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-170797: Malicious code in alyssawilliams (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The alyssawilliams 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 distribution of JavaScript applications. However, it has been identified as part of a malicious campaign that aims to exploit the npm registry by flooding it with derivative packages, thereby inflating developer reputation scores for token rewards in the tea.xyz protocol.

Vulnerability Detail

The vulnerability in the alyssawilliams package originates from its association with a malicious campaign that utilizes autopublish scripts to generate and publish numerous derivative packages with randomized names. These scripts modify the package.json file to remove private flags, alter version numbers, and continuously republish variants, which can lead to pollution of the npm registry. This not only compromises the integrity of the npm ecosystem but also poses risks to developers who may unknowingly use these compromised packages in their projects.

How To Fix

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

npm uninstall alyssawilliams

If it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.

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Workaround

As a temporary measure, you can avoid using the alyssawilliams package and look for alternative packages that provide similar functionality without the associated risks. Additionally, you can implement strict dependency management practices to monitor and control the packages used in your projects.

Conclusion

The alyssawilliams package poses a significant security risk due to its association with a malicious campaign that exploits the npm registry. Developers are advised to remove this package and monitor their projects for vulnerabilities. Utilizing tools like Vulert can help maintain the security of your applications.

See every vulnerability recorded for alyssawilliams →

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FAQ

The alyssawilliams package is a JavaScript package available on npm, which has been identified as part of a malicious campaign aimed at exploiting the npm registry.

The vulnerability can lead to the introduction of malicious code into your project, potentially compromising its security and integrity.

You should remove the alyssawilliams package from your project immediately and monitor for any updates or patches that may be released.

You can use tools like Vulert, which monitors your package-lock.json file to alert you in real-time for open-source vulnerabilities in your software.

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

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How To Fix

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

npm uninstall alyssawilliams

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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