Malicious Code Detected in repo-typescript-config Package - Version 99.0.0

repo-typescript-config Updated 21 Mar 2026

Summary

21/03/2026
CRITICAL
No i
Critical
Not published

MAL-2026-2009: Malicious code in repo-typescript-config (npm). Affects repo-typescript-config versions 99.0.0. No fix is published. How to fix ↓

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Background

The repo-typescript-config package is an npm package designed to provide TypeScript configuration settings for repositories. It is commonly used by developers to streamline their TypeScript setup. However, version 99.0.0 has been flagged for malicious behavior, raising concerns about its integrity and security.

Vulnerability Detail

The vulnerability in the repo-typescript-config package arises from its communication with a domain linked to malicious activities and the execution of commands that are deemed harmful. This behavior poses significant risks, including unauthorized access to sensitive data, potential system compromise, and the execution of arbitrary code, which can lead to further exploitation of the affected systems.

How To Fix

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

npm uninstall repo-typescript-config

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 measure, you can remove the repo-typescript-config package from your project until a secure version is released. Use the following command to uninstall the package: npm uninstall repo-typescript-config.

Conclusion

The repo-typescript-config package version 99.0.0 has been identified as malicious due to its harmful behavior. It is essential for developers using this package to take immediate action by updating or removing it to protect their applications from potential threats.

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FAQ

repo-typescript-config is an npm package that provides TypeScript configuration settings for developers, aimed at simplifying TypeScript setup in projects.

The malicious behavior was identified by the OpenSSF Package Analysis project, which flagged version 99.0.0 for communicating with a domain associated with malicious activities.

The risks include unauthorized access to sensitive data, potential system compromise, and execution of harmful commands that could lead to further exploitation.

You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software using just the package-lock.json file. You can check your application for vulnerabilities without any signup at the Vulert playground.

If immediate updates are not possible, consider removing the package temporarily as a workaround to mitigate risks until a secure version is available.

How To Fix

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

npm uninstall repo-typescript-config

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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