Critical Malicious Code Vulnerability in osopackage Package

osopackage Updated 11 Feb 2026

Summary

11/02/2026
CRITICAL
No i
Critical
Not published

MAL-2026-857: Malicious code in osopackage (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The osopackage is an npm package designed for managing and packaging applications in JavaScript environments. It is commonly used by developers to streamline their development processes. However, this package has been identified as containing malicious code that compromises the security of any system it is installed on, making it a significant risk for users and organizations relying on it.

Vulnerability Detail

The vulnerability originates from the inclusion of malicious code within the osopackage, which has been flagged by the GitHub Security Advisory (GHSA). Any system running this package is considered fully compromised, with potential unauthorized access to sensitive information such as secrets and keys. The malicious code can lead to severe ramifications, including data breaches and loss of control over the affected systems.

How To Fix

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

npm uninstall osopackage

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 →

Workaround

As a workaround, ensure that the osopackage is uninstalled from your system. You can do this by running the following command: npm uninstall osopackage. Additionally, monitor your systems for any unusual activity and consider using tools like Vulert to check for vulnerabilities in your package-lock.json file.

Conclusion

The osopackage has been identified as a critical security risk due to the presence of malicious code. Users are strongly advised to uninstall the package immediately and take necessary precautions to secure their systems. Regular monitoring of dependencies is crucial to maintaining a secure development environment.

See every vulnerability recorded for osopackage →

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FAQ

Immediately uninstall the osopackage and rotate any secrets or keys stored on the affected system.

You can use Vulert's playground at Vulert Scanner to check if your application is affected without needing to sign up.

Currently, there is no patched version available. The best course of action is to uninstall the package.

Failing to address this vulnerability can lead to unauthorized access to sensitive data and complete system compromise.

While many npm packages are safe, it is essential to regularly monitor and audit your dependencies for vulnerabilities.

How To Fix

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

npm uninstall osopackage

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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