Malicious Code Injection in steep_leech-appteadev: npm Package Vulnerability

steep_leech-appteadev Updated 18 Nov 2025

Summary

11/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-109115: Malicious code in steep_leech-appteadev (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The steep_leech-appteadev package is part of the npm ecosystem, primarily used for various development tasks. However, it has been identified as part of a malicious campaign that exploits npm's publishing capabilities. This package is associated with the tea.xyz token reward initiative, which has been known to flood the npm registry with derivative packages that aim to inflate developer reputation scores.

Vulnerability Detail

The vulnerability in steep_leech-appteadev originates from its malicious payload, which modifies the package.json file by removing private flags and altering version numbers. It generates random package names, often themed around Indonesian culture, and continuously republishes these variants to pollute the npm registry. This behavior not only compromises the integrity of the npm ecosystem but also poses risks to developers who may unknowingly use these tainted packages, leading to potential security breaches in their applications.

How To Fix

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

npm uninstall steep_leech-appteadev

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, you can avoid using the steep_leech-appteadev package altogether. If it is a dependency of another package, consider looking for alternatives or contacting the maintainer of the parent package to address this issue.

Conclusion

The steep_leech-appteadev package poses a significant risk due to its malicious behavior, which can compromise the security of applications relying on it. It is essential to remove this package and monitor your projects for similar vulnerabilities to maintain a secure development environment.

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FAQ

steep_leech-appteadev is an npm package that has been identified as part of a malicious campaign targeting the npm registry.

Using this package can lead to the introduction of malicious code into your application, compromising its security and integrity.

You should uninstall the steep_leech-appteadev package immediately and check your project for any other affected packages.

Yes, you can use Vulert, which monitors your package-lock.json file for open-source vulnerabilities in real-time. You can check your application using the Vulert playground without any signup.

Regularly audit your dependencies, use tools like Vulert for monitoring, and stay updated on known vulnerabilities in the packages you use.

How To Fix

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

npm uninstall steep_leech-appteadev

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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