Malicious Code Detected in @zalastax/nolb-multit Package
Summary
MAL-2025-12456: Malicious code in @zalastax/nolb-multit (npm). Affected versions are not published. No fix is published. How to fix ↓
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.
No signup required · Results in about 60 seconds
Background
The @zalastax/nolb-multit package is an npm library designed for multi-threaded operations in Node.js applications. It aims to enhance performance by allowing concurrent processing. However, this package has been found to contain malicious code, posing significant security risks to applications that utilize it.
Vulnerability Detail
The vulnerability in the @zalastax/nolb-multit package stems from the inclusion of malicious code that can compromise the security of applications using this package. This code could potentially lead to unauthorized access, data breaches, or other harmful actions within the affected systems. The malicious code was introduced in version 0 and has not been addressed in subsequent releases.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall @zalastax/nolb-multit
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
Currently, there are no specific workarounds to mitigate the effects of the malicious code in the @zalastax/nolb-multit package. The best course of action is to uninstall the package entirely.
Conclusion
The @zalastax/nolb-multit package has been identified as containing malicious code, which poses a significant risk to applications that utilize it. It is essential to uninstall this package immediately and consider alternative solutions to maintain the security and integrity of your applications.
See every vulnerability recorded for @zalastax/nolb-multit →
FAQ
The malicious code can compromise application security, potentially leading to unauthorized access and data breaches.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. By checking your package-lock.json file, you can determine if your application is affected.
No, there is currently no patched version available for the @zalastax/nolb-multit package. The recommendation is to uninstall it.
Consider looking for alternative packages that offer similar multi-threading capabilities without the associated risks.
You can use Vulert's playground to check for vulnerabilities in your application without needing to sign up. This tool provides real-time monitoring based on your package-lock.json.