Critical Malicious Code Vulnerability in systemtest-network Package

systemtest-network Updated 11 Feb 2026

Summary

11/02/2026
CRITICAL
No i
Critical
Not published

MAL-2026-859: Malicious code in systemtest-network (npm). Affected versions are not published. No fix is published. How to fix ↓

Free scan

Check if this vulnerability affects your application

Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.

Check my app free

No signup required · Results in about 60 seconds

Upload your dependency manifest or SBOM

Drag & drop your file here or

Java Javascript PHP Python Go Rust Ruby Dart C/C++ Elixir CycloneDX SPDX

Upload a supported dependency manifest or SBOM. No installation or source-code access required.

See supported files and SBOM formats
SBOM sbom.json · bom.json · bom.xml · *.spdx.json · *.cdx.json · *.cdx.xml
Java pom.xml · gradle.lockfile · buildscript-gradle.lockfile
Javascript package-lock.json · yarn.lock · pnpm-lock.yaml
PHP composer.lock
Python poetry.lock · requirements.txt · Pipfile.lock
Go go.mod
Rust Cargo.lock
Ruby Gemfile.lock
Dart pubspec.lock
C/C++ conan.lock
Elixir mix.lock
Enter your work email to receive your report link.

Verify your email to view the full report and start 30 days of continuous monitoring. No credit card required.

Sponsored MarkAI Find prospects already talking about the problem you solve AI watches the communities your customers use to find qualified prospects, then alerts you when a conversation is worth joining. See MarkAI

Background

The systemtest-network package is an npm module designed for testing network functionalities in applications. It is commonly used by developers to simulate network conditions and test the resilience of their applications. However, this package has been identified to contain malicious code that compromises the security of any system it is installed on.

Vulnerability Detail

The vulnerability originates from the inclusion of malicious code within the systemtest-network package. This code can fully compromise any computer that has the package installed, allowing unauthorized access to sensitive information such as secrets and keys. The ramifications of this vulnerability are severe, as it can lead to data breaches and loss of control over the affected systems. The specific technical aspect of this vulnerability is classified under CWE-506, indicating that the product contains code that appears to be malicious in nature.

How To Fix

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

npm uninstall systemtest-network

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 you do not run any applications that depend on the systemtest-network package until it has been removed and your system has been secured. Additionally, consider using alternative packages that provide similar functionality without the associated risks.

Conclusion

The systemtest-network package has been identified as containing malicious code that poses a significant security risk. Immediate action is required to remove the package and secure any compromised systems. Regular monitoring of open-source packages is essential to prevent future vulnerabilities.

See every vulnerability recorded for systemtest-network →

Share this vulnerability

FAQ

You should immediately uninstall the package and rotate any sensitive information stored on the affected system.

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

No, there is currently no patched version available for this package.

Failing to address this vulnerability can lead to unauthorized access to sensitive data and complete control of your system by malicious actors.

While many npm packages are safe, it is essential to review and monitor all packages for vulnerabilities regularly. Using tools like Vulert can help you stay informed.

How To Fix

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

npm uninstall systemtest-network

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 →

Subscribe to Vulert on Telegram
Daily digest of new CVEs, critical and high severity, affected packages and fixes — plus a weekly roundup.
Join the channel →
Help improve this record
Report an issue or send feedback