Malicious Code Detected in cursorapp: A Critical Vulnerability

cursorapp Updated 02 Oct 2025

Summary

14/08/2025
CRITICAL
No i
Critical
Not published

MAL-2025-17831: Malicious code in cursorapp (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The cursorapp package is an npm library designed for various functionalities within JavaScript applications. It is widely used for its ease of integration and utility in enhancing user experience. However, it has been identified to contain malicious code, posing significant risks to applications that rely on it.

Vulnerability Detail

The vulnerability in cursorapp stems from the inclusion of malicious code that can compromise the security of applications utilizing this package. This code may lead to unauthorized access, data breaches, or other malicious activities. The issue was introduced in version 0 and affects all subsequent versions, making it imperative 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 cursorapp

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, consider using alternative packages that provide similar functionality without the associated risks. Always ensure to review the security status of any package before integration.

Conclusion

The discovery of malicious code in the cursorapp package poses a serious threat to applications that utilize it. Immediate action is required to mitigate risks by uninstalling the package and monitoring for updates. Utilizing tools like Vulert can further enhance your security posture.

See every vulnerability recorded for cursorapp →

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FAQ

cursorapp is an npm package used in JavaScript applications for various functionalities, but it has been found to contain malicious code.

You can check if your application is affected by using Vulert, which monitors and alerts for open-source vulnerabilities. Visit Vulert Scanner to analyze your package-lock.json without any signup.

Immediately uninstall the cursorapp package from your project and consider using alternative packages until a secure version is released.

Currently, there is no patched version available. Users are advised to uninstall the package until a secure update is released.

Vulert uses your package-lock.json to monitor and alert you in real-time for open-source vulnerabilities, helping you maintain the security of your software.

How To Fix

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

npm uninstall cursorapp

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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