Malicious Code Detected in flag-v211 Package - Security Alert
Summary
MAL-2026-284: Malicious code in flag-v211 (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The flag-v211 package is an npm library commonly used in JavaScript applications for flagging features or configurations. It is designed to provide developers with a simple way to manage feature flags, enabling or disabling features in a controlled manner. However, this package has been identified to contain malicious code, posing significant security risks to applications that utilize it.
Vulnerability Detail
The vulnerability originates from the flag-v211 package, which has been found to contain malicious code. This malicious code can potentially compromise the security of applications using this package, leading to unauthorized access, data breaches, or other malicious activities. The issue is particularly concerning as it affects all versions of the package, starting from version 0, making it imperative 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 flag-v211If it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
As a temporary workaround, you can replace the flag-v211 package with an alternative feature flag management library that does not have known vulnerabilities. Ensure to review the documentation of the alternative library for proper implementation.
Conclusion
The flag-v211 package has been identified as containing malicious code, which poses significant risks to applications that utilize it. Immediate action is required to remove this package and safeguard your application from potential threats. Regular monitoring for vulnerabilities using tools like Vulert is recommended to maintain application security.
See every vulnerability recorded for flag-v211 →
FAQ
The flag-v211 package is used for managing feature flags in JavaScript applications, allowing developers to enable or disable features dynamically.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software. By analyzing your package-lock.json file, Vulert can identify if your application is affected. You can also check using the Vulert playground without signup.
It is advised to remove the flag-v211 package from your project immediately, as it contains malicious code that poses security risks.
Currently, there is no patched version available for the flag-v211 package. The best course of action is to remove it from your project.
Using the flag-v211 package can lead to unauthorized access, data breaches, and other malicious activities due to the presence of malicious code.
