Malicious Code Detected in captchaad Package - Security Alert

captchaad Updated 02 Oct 2025

Summary

14/08/2025
CRITICAL
No i
Critical
Not published

MAL-2025-16520: Malicious code in captchaad (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The captchaad package is an npm library designed to provide CAPTCHA functionalities for web applications. It is commonly used to prevent automated submissions and enhance security on forms. However, recent findings have revealed that this package contains malicious code, posing significant risks to users and their applications.

Vulnerability Detail

The vulnerability in the captchaad package originates from the inclusion of malicious code that can compromise the security of applications utilizing this library. This code may lead to unauthorized access, data breaches, or other malicious activities. 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 captchaad

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, users can avoid using the captchaad package altogether and implement alternative CAPTCHA solutions that are known to be secure. This can be done by integrating other libraries or services that provide CAPTCHA functionalities without the associated risks.

Conclusion

The discovery of malicious code in the captchaad package highlights the importance of regularly auditing dependencies in software projects. Users are urged to remove the affected package and consider secure alternatives to protect their applications from potential threats.

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FAQ

The captchaad package is used to implement CAPTCHA functionalities in web applications to prevent automated submissions.

The malicious code was identified through security audits and reports from security researchers, including Amazon Inspector.

Using the compromised package can lead to unauthorized access, data breaches, and potential exploitation of the application.

Yes, you can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time using just your package-lock.json file.

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How To Fix

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

npm uninstall captchaad

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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