Malicious Code Detected in congstudy Package - Security Alert

congstudy Updated 02 Oct 2025

Summary

14/08/2025
CRITICAL
No i
Critical
Not published

MAL-2025-17488: Malicious code in congstudy (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The congstudy package is an npm library designed for educational purposes, often used in various JavaScript applications. It provides functionalities that may assist developers in learning and experimenting with coding concepts. However, recent findings have revealed that this package contains malicious code, posing significant security risks to users and their applications.

Vulnerability Detail

The vulnerability in the congstudy package originates from the inclusion of malicious code that can compromise the security of applications utilizing this package. This malicious code can lead to unauthorized access, data breaches, or even complete system takeover, depending on how the package is integrated into the user's application. The issue affects all versions starting from the initial release, making it critical for users to take immediate action.

How To Fix

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

npm uninstall congstudy

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 isolate the usage of the congstudy package in a controlled environment, ensuring that it does not interact with sensitive data or systems. However, this is not a permanent solution, and complete removal of the package is advised.

Conclusion

The discovery of malicious code in the congstudy package poses a serious threat to users and their applications. Immediate action is required to remove this package and safeguard against potential security breaches. Utilizing tools like Vulert can help monitor and alert for such vulnerabilities in the future.

See every vulnerability recorded for congstudy →

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FAQ

The congstudy package is an npm library used for educational purposes in JavaScript applications.

The malicious code can lead to unauthorized access and potential data breaches in applications using the package.

You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. Simply upload your package-lock.json file to check for vulnerabilities.

Currently, there is no safe version of the congstudy package. It is recommended to remove it from your project.

You can use the Vulert playground at Vulert Scanner to check for vulnerabilities without needing to sign up.

How To Fix

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

npm uninstall congstudy

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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