Malicious Code Injection in chilly_koala-toolteadev: A Threat to npm Users

chilly_koala-toolteadev Updated 24 Nov 2025

Summary

11/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-100385: Malicious code in chilly_koala-toolteadev (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The package chilly_koala-toolteadev 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 known to flood the npm registry with malicious packages. The primary function of such packages is to inflate developer reputation scores through the automatic generation and publishing of derivative packages, often leading to security vulnerabilities.

Vulnerability Detail

The vulnerability in chilly_koala-toolteadev stems from its malicious payload that modifies the package.json file. It removes private flags, alters version numbers, and generates random package names, which can lead to the pollution of the npm registry. This behavior is part of a broader scheme to exploit the npm ecosystem for token rewards, posing significant risks to developers and users who may unknowingly install these compromised packages.

How To Fix

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

npm uninstall chilly_koala-toolteadev

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 →

Workaround

As a temporary workaround, users can avoid using the chilly_koala-toolteadev package until a secure version is released. Additionally, consider using tools like Vulert to monitor your project for vulnerabilities. You can check if your application is affected by this vulnerability using the Vulert playground at https://vulert.com/scanner without any signup.

Conclusion

The chilly_koala-toolteadev package poses a significant security risk due to its malicious code that alters package metadata and floods the npm registry. Users are advised to remove the package and monitor their projects for vulnerabilities using tools like Vulert. Staying informed and proactive is essential in maintaining the security of your software.

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FAQ

chilly_koala-toolteadev is an npm package that has been identified as part of a malicious campaign to inflate developer reputation scores through the automatic generation of derivative packages.

The vulnerability can lead to the installation of compromised packages, which may introduce security risks and affect the integrity of your project.

If you have installed chilly_koala-toolteadev, it is recommended to remove it and update to a secure version if available. Use 'npm uninstall chilly_koala-toolteadev' to remove it.

You can use Vulert, which monitors and alerts in real-time for open-source vulnerabilities in your software. Check your application using the Vulert playground at Vulert Scanner.

Currently, there is no specific patch version mentioned for chilly_koala-toolteadev. Users should regularly check the npm registry for updates.

How To Fix

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

npm uninstall chilly_koala-toolteadev

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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