Critical Malicious Code Vulnerability in viktor-xml-parser Package

viktor-xml-parser Updated 19 Dec 2025

Summary

19/12/2025
CRITICAL
No i
Critical
Not published

MAL-2025-192646: Malicious code in viktor-xml-parser (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The viktor-xml-parser package is an npm library designed for parsing XML data in JavaScript applications. It is commonly used for its simplicity and efficiency in handling XML structures. However, this package has been identified as containing malicious code, which poses significant security risks to any system utilizing it.

Vulnerability Detail

The vulnerability stems from the presence of embedded malicious code within the viktor-xml-parser package. This code can compromise any computer that has the package installed, allowing unauthorized access to sensitive information such as secrets and keys. The malicious nature of this code means that simply removing the package may not eliminate all traces of the compromise, as full control of the affected system may have been granted to an external entity.

How To Fix

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

npm uninstall viktor-xml-parser

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

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Workaround

As a workaround, if you need to parse XML data, consider using alternative libraries that are known to be secure, such as xml2js or fast-xml-parser. You can install one of these packages using npm, for example: npm install xml2js.

Conclusion

The viktor-xml-parser package has been identified as containing malicious code that poses serious security risks. Immediate action is required to remove the package and secure any sensitive information. Utilizing alternative libraries for XML parsing is recommended to maintain functionality without compromising security.

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FAQ

Immediately uninstall the package using npm uninstall viktor-xml-parser and rotate any sensitive information stored on the affected system.

You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. Visit Vulert Scanner to check if your application is affected without requiring any signup.

No, there is currently no patched version available for viktor-xml-parser. The only solution is to remove the package entirely.

Failing to address this vulnerability can lead to unauthorized access to sensitive data, potential data breaches, and complete compromise of the affected system.

Yes, you can use alternative libraries such as xml2js or fast-xml-parser, which are secure and widely used in the community.

How To Fix

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

npm uninstall viktor-xml-parser

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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