Malicious Code Vulnerability in casual_antlion-strongdev Package

casual_antlion-strongdev Updated 24 Nov 2025

Summary

11/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-100277: Malicious code in casual_antlion-strongdev (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The casual_antlion-strongdev package is part of the npm ecosystem, often utilized for various development tasks. However, it has been identified as part of a malicious campaign that exploits npm's publishing capabilities. This package is designed to manipulate its own metadata and publish numerous derivative packages, potentially harming developers' reputations and polluting the npm registry.

Vulnerability Detail

The vulnerability stems from the package's involvement in the tea.xyz token reward campaign, which aims to inflate developer reputation scores through the automatic generation and publication of derivative packages. The malicious code modifies the package.json file to remove private flags, alters version numbers, and creates random package names, leading to the continuous republishing of these variants. This not only affects the integrity of the npm registry but also poses risks to developers who may unknowingly use these compromised packages.

How To Fix

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

npm uninstall casual_antlion-strongdev

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, avoid using the casual_antlion-strongdev package and consider using alternative packages that provide similar functionality without the associated risks.

Conclusion

The casual_antlion-strongdev package has been identified as a malicious entity within the npm ecosystem, posing significant risks to developers and the integrity of the npm registry. Immediate action is required to remove this package and safeguard your projects.

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FAQ

It is an npm package that has been identified as part of a malicious campaign to manipulate package metadata and inflate developer reputation scores.

Using this package can lead to the pollution of the npm registry and may compromise your project's integrity by introducing malicious code.

You should uninstall the package immediately using the command npm uninstall casual_antlion-strongdev.

Yes, consider looking for other npm packages that provide similar functionality without the associated risks.

You can use Vulert, which monitors your package-lock.json file to alert you in real-time for open-source vulnerabilities. You can also check if your application is affected by this vulnerability using the Vulert playground at Vulert Scanner without any signup.

How To Fix

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

npm uninstall casual_antlion-strongdev

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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