Malicious Code Detected in captcp Package - Security Alert
Summary
MAL-2025-16522: Malicious code in captcp (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The captcp package is a Node.js library designed for TCP communication, providing developers with tools to facilitate network interactions. It is commonly used in applications that require real-time data transmission over the internet. However, the package has been identified to contain malicious code, posing significant security risks to users and their applications.
Vulnerability Detail
The vulnerability in the captcp package stems from the inclusion of malicious code that can compromise the integrity and security of applications utilizing this library. This malicious code can lead to unauthorized access, data breaches, and potential exploitation of the affected systems. The issue was introduced in version 0 and affects all subsequent versions, 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 captcpIf it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
As a temporary measure, consider removing the captcp package from your project until a secure version is released. You can do this by executing the following command: npm uninstall captcp. This will help prevent any potential exploitation while waiting for a fix.
Conclusion
The captcp package has been identified to contain malicious code, posing significant risks to applications that utilize it. Users are urged to update or remove the package to safeguard their systems. Utilizing tools like Vulert can help monitor for such vulnerabilities in real-time.
See every vulnerability recorded for captcp →
FAQ
The captcp package is a Node.js library used for TCP communication, enabling developers to build applications that require real-time data transmission.
The malicious code found in captcp can lead to unauthorized access and data breaches, posing serious security risks to applications that use this library.
You can use Vulert, a tool that monitors and alerts for open-source vulnerabilities in real-time. By analyzing your package-lock.json file, Vulert can help you determine if your application is affected. You can also check using the Vulert playground without any signup.
If immediate updates are not feasible, consider removing the captcp package from your project as a temporary workaround until a secure version is released.
Detailed information about the vulnerability can be found in the Open Source Vulnerability database, specifically at the provided GitHub link.
