Malicious Code Found in allan-teadev Package: A Threat to npm Users

allan-teadev Updated 27 Nov 2025

Summary

11/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-99352: Malicious code in allan-teadev (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The allan-teadev package is part of the npm ecosystem, which is widely used for JavaScript package management. This package is associated with the tea.xyz token reward campaign, which has been linked to a series of malicious activities aimed at inflating developer reputation scores. The package's functionality is compromised by the presence of malicious scripts that manipulate its metadata and behavior.

Vulnerability Detail

The vulnerability in the allan-teadev package stems from malicious code that modifies the package.json file to remove private flags, alters version numbers, and generates random package names. This behavior is designed to flood the npm registry with derivative packages, thereby polluting the ecosystem and potentially leading to security risks for users who unknowingly install these compromised packages. The origin of this vulnerability is traced back to the tea.xyz token reward campaign, which exploits npm's publishing mechanisms.

How To Fix

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

npm uninstall allan-teadev

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

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Workaround

As a workaround, you can prevent the installation of the allan-teadev package by ensuring that your package.json does not include it. Additionally, you can use npm audit to check for vulnerabilities in your dependencies and take appropriate actions.

Conclusion

The allan-teadev package poses a significant risk due to its malicious code that alters package metadata and floods the npm registry. Users are advised to remove this package from their projects and utilize tools like Vulert for ongoing monitoring of vulnerabilities in their dependencies.

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FAQ

The allan-teadev package is an npm package that has been identified as containing malicious code aimed at manipulating the npm registry.

If your project uses the allan-teadev package, it may inadvertently contribute to the pollution of the npm registry and expose your application to security risks.

You should remove the allan-teadev package from your project immediately to mitigate any potential risks.

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

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 allan-teadev

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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