Critical Malicious Code Vulnerability in coffe-script Package
Summary
MAL-2025-17263: Malicious code in coffe-script (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The coffe-script package is a popular JavaScript compiler that allows developers to write code in CoffeeScript, a language that transcompiles into JavaScript. It is widely used for its syntactic sugar and enhanced readability, making JavaScript development more accessible. However, recent findings have revealed that the package contains malicious code, posing significant security risks to applications that utilize it.
Vulnerability Detail
The vulnerability in the coffe-script package stems from the inclusion of malicious code that can compromise the security of applications using 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. Developers using coffe-script should be aware of the potential ramifications, including loss of data integrity and exposure to further attacks.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall coffe-scriptIf it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
If immediate updating is not feasible, consider removing the coffe-script package from your project temporarily until a secure version is available. You can do this by running: npm uninstall coffe-script. This will prevent any potential exploitation of the vulnerability while you seek a permanent fix.
Conclusion
The discovery of malicious code in the coffe-script package highlights the importance of maintaining secure coding practices and regularly updating dependencies. Developers should take immediate action to update or remove the affected package to safeguard their applications from potential threats.
See every vulnerability recorded for coffe-script →
FAQ
Coffe-script is a JavaScript compiler that allows developers to write in CoffeeScript, which is then converted into JavaScript code.
The malicious code can lead to unauthorized access and data breaches, posing significant security risks to applications using the package.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. Visit Vulert Scanner to check if your application is affected without needing to sign up.
Consider uninstalling the coffe-script package temporarily to mitigate the risk until a secure version is available.
Yes, updating to the latest version of the coffe-script package will provide a patch for the vulnerability.
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