Critical Malicious Code Vulnerability in chai-async-test Package
Summary
MAL-2026-409: Malicious code in chai-async-test (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The chai-async-test package is a testing utility for asynchronous code in JavaScript applications, commonly used in conjunction with the Chai assertion library. It simplifies the process of writing tests for asynchronous functions, making it easier for developers to ensure code reliability. However, this package has been found to contain malicious code, posing significant security risks to any system utilizing it.
Vulnerability Detail
The vulnerability stems from the presence of embedded malicious code within the chai-async-test package. This code can compromise the entire system where the package is installed, allowing unauthorized access to sensitive information such as secrets and keys. The malicious nature of this code means that any computer running this package should be considered fully compromised, and there is no guarantee that simply removing the package will eliminate all traces of the malicious software.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall chai-async-testIf 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 entirely and ensuring that your system is secure. It is crucial to monitor your system for any unusual activity following the removal.
Conclusion
The discovery of malicious code within the chai-async-test package poses a serious threat to any systems utilizing it. Immediate action is required to remove the package and secure sensitive information. Utilizing tools like Vulert can help in monitoring for such vulnerabilities in the future.
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FAQ
Chai-async-test is a utility for testing asynchronous JavaScript code, designed to work with the Chai assertion library.
If you have the chai-async-test package installed, your system is at risk. You can use tools like Vulert to monitor and alert for vulnerabilities.
Immediately remove the chai-async-test package and rotate any sensitive information stored on the affected system.
Currently, there is no patched version available. The best course of action is to remove the package entirely.
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