Malicious Code Detected in flag-v21 Package - Security Alert
Summary
MAL-2026-283: Malicious code in flag-v21 (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The flag-v21 package is a utility library in the npm ecosystem that is commonly used for managing flags in applications. It provides developers with a simple way to handle feature toggles and configuration flags. However, it has been identified to contain malicious code, posing a significant security risk to applications that depend on it.
Vulnerability Detail
The vulnerability in the flag-v21 package originates from the inclusion of malicious code that can compromise the security of applications utilizing this package. This malicious code could potentially lead to unauthorized access, data breaches, or other harmful actions within the application environment. The specific technical details of the malicious behavior have not been disclosed, but the presence of such code is a critical concern for developers and users alike.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall flag-v21If it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
As a temporary workaround, consider removing the flag-v21 package from your project until a secure version is available. You can do this by executing the command: npm uninstall flag-v21. This will prevent any potential exploitation of the malicious code while you seek an alternative solution.
Conclusion
The flag-v21 package has been identified to contain malicious code, posing a serious security risk to applications that utilize it. It is crucial for developers to update or remove this package to protect their applications from potential exploitation. Utilizing tools like Vulert can help monitor and manage vulnerabilities effectively.
See every vulnerability recorded for flag-v21 →
FAQ
The flag-v21 package is a utility library in the npm ecosystem used for managing feature flags and configuration toggles in applications.
The specific details of the malicious code have not been disclosed, but it poses a significant security risk to applications using the package.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. Check your application using the Vulert playground at Vulert Scanner.
If an immediate update is not possible, consider uninstalling the flag-v21 package as a temporary measure to mitigate risk.
The vulnerability was reported by Amazon Inspector, a service that helps identify security issues in applications.
