Malicious Code Vulnerability in elf-stats-mistletoe-cookie-256 Package

Summary

23/12/2025
CRITICAL
No i
Critical
Not published

MAL-2025-192776: Malicious code in elf-stats-mistletoe-cookie-256 (npm). Affects elf-stats-mistletoe-cookie-256 versions 1.0.1. No fix is published. How to fix ↓

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Background

The elf-stats-mistletoe-cookie-256 package is an npm library designed for managing and analyzing cookie statistics in web applications. It provides developers with tools to track cookie usage and optimize user experience. However, this package has been identified as containing malicious code, posing significant security risks to applications that utilize it.

Vulnerability Detail

The vulnerability stems from the presence of malicious code within the elf-stats-mistletoe-cookie-256 package. This code can potentially compromise the integrity of applications by executing unauthorized actions, leading to data breaches or unauthorized access to sensitive information. The malicious nature of this code was identified by ReversingLabs, which has flagged the package as harmful.

How To Fix

This package is malicious. Remove it and rotate any credentials it could have accessed.

npm uninstall elf-stats-mistletoe-cookie-256

If it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.

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Workaround

If an immediate update is not feasible, consider removing the package from your project temporarily to mitigate risks. You can uninstall the package using the command: 'npm uninstall elf-stats-mistletoe-cookie-256'. This will prevent the execution of any malicious code until a safe version is available.

Conclusion

The elf-stats-mistletoe-cookie-256 package has been flagged for containing malicious code, posing significant security risks. It is crucial for developers to update or remove this package to protect their applications. Utilizing tools like Vulert can help in monitoring and managing such vulnerabilities effectively.

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FAQ

It is an npm library used for managing and analyzing cookie statistics in web applications.

The malicious code was identified by ReversingLabs, which monitors and analyzes open-source packages for security threats.

The risks include potential data breaches, unauthorized access to sensitive information, and compromised application integrity.

You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time using just your package-lock.json file.

Yes, you can use the Vulert playground at Vulert Scanner to check for vulnerabilities in your application without requiring an account.

Sponsored Lume, the Habilume companion Habilume Habit tracker with a companion that grows with you Complete habits, earn Lume Points, and watch your Lume grow as you stay consistent. App Store Google Play

How To Fix

This package is malicious. Remove it and rotate any credentials it could have accessed.

npm uninstall elf-stats-mistletoe-cookie-256

If it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.

Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →

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