Detect XXE Attacks from Input Text in C#

XML External Entity (XXE) attacks are a type of cyber threat that targets applications that parse XML requests. Since XML is used in most web applications, XXE attacks are a serious security vulnerability that is often overlooked. The following API can be used in C# to automatically review and detect XXE attacks from text input; this added layer of protection can help you guard against these non-standard threats.

To get things started, we will first install the .NET Framework SDK:

Install-Package Cloudmersive.APIClient.NET.Validate -Version 3.2.0

Then we will call the function by adding our user-facing text input and API key to the below code:

using System;
using System.Diagnostics;
using Cloudmersive.APIClient.NET.Validate.Api;
using Cloudmersive.APIClient.NET.Validate.Client;
using Cloudmersive.APIClient.NET.Validate.Model;

The returned response will inform you if an XXE attack is present in your input text. To retrieve your API key, simply head to the Cloudmersive website to register for a free account; this will give you access to 800 monthly calls across our library of APIs.

There’s an API for that. Cloudmersive is a leader in Highly Scalable Cloud APIs.