Critical Malicious Code Vulnerability in chai-promised-chains Package
Summary
MAL-2025-192984: Malicious code in chai-promised-chains (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
chai-promised-chains is an npm package designed to facilitate the use of promises with the Chai assertion library, enhancing testing capabilities in JavaScript applications. However, this package has been identified to contain malicious code that compromises the security of any system where it is installed, making it a significant threat to developers and organizations relying on it.
Vulnerability Detail
The vulnerability stems from the presence of embedded malicious code within the chai-promised-chains package. This code can fully compromise any computer that has the package installed, allowing unauthorized access to sensitive information such as secrets and keys. The origin of this issue is linked to the package's malicious intent, which poses severe risks to the integrity and confidentiality of affected systems.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall chai-promised-chainsIf it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
There are no effective workarounds for this vulnerability other than removing the package and ensuring that your system is secure. It is advisable to monitor your system for any signs of compromise.
Conclusion
The discovery of malicious code in the chai-promised-chains package poses a serious threat to any system that has it installed. Immediate action is required to remove the package and secure sensitive information. Regular monitoring for vulnerabilities is essential to maintain the integrity of your applications.
See every vulnerability recorded for chai-promised-chains →
FAQ
chai-promised-chains is an npm package that integrates promises with the Chai assertion library, primarily used for testing in JavaScript applications.
The malicious code can compromise your system, allowing unauthorized access to sensitive information and potentially leading to data breaches.
Immediately uninstall the chai-promised-chains package and rotate any sensitive information stored on the affected system.
No, there is no patch available for this vulnerability. The only solution is to remove the package entirely.
You can use Vulert, which monitors and alerts in real-time for open-source vulnerabilities using just your package-lock.json. You can check if your application is affected by this vulnerability using the Vulert playground without any signup.
