Critical Malicious Code Vulnerability in mapkit-example-svelte Package
Summary
MAL-2026-523: Malicious code in mapkit-example-svelte (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 mapkit-example-svelte package is an npm library designed for building web applications using Svelte and MapKit. It provides developers with tools to integrate mapping functionalities into their applications. However, this package has been found to contain malicious code, posing significant security risks to any system where it is installed.
Vulnerability Detail
The vulnerability originates from the inclusion of malicious code within the mapkit-example-svelte package. This code compromises the security of any computer that has the package installed, allowing unauthorized access to sensitive information such as secrets and keys. The malicious nature of the code is classified under CWE-506, indicating that it appears to be harmful. Users should consider their systems fully compromised and take immediate action to mitigate risks.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall mapkit-example-svelteIf 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, it is advised to avoid using the mapkit-example-svelte package altogether until a secure version is released. Additionally, ensure that all secrets and keys stored on the affected computer are rotated immediately from a different, secure machine.
Conclusion
The mapkit-example-svelte package contains malicious code that poses a serious security threat. Users are advised to uninstall the package immediately and take necessary precautions to secure their systems. Continuous monitoring for vulnerabilities is crucial to maintaining application security.
See every vulnerability recorded for mapkit-example-svelte →
FAQ
It is an npm library for integrating MapKit functionalities into Svelte applications.
The malicious code can compromise your system, allowing unauthorized access to sensitive information.
You should uninstall the package immediately and rotate any sensitive information stored on your system.
Currently, there is no patched version available. Users should remove the package until a secure version is released.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time using just package-lock.json. You can also check your application for vulnerabilities using the Vulert playground without signup.
