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Earlier this week, Microsoft patched a vulnerability that was flagged with the "highest ever" severity rating received by an ASP.NET Core security flaw. This HTTP request smuggling bug (CVE-2025-55315 ...

The Kestrel web server flaw allows request smuggling attacks, but the actual risk depends on the application code and deployment. Microsoft has patched a critical vulnerability in ASP.NET Core that ...

Since its inception as an intriguing experiment in leveraging WebAssembly to enable dynamic web development with C#, Blazor has evolved into a mature, fully featured framework. Integral to the ASP.NET ...

While putting some special content together, I found myself needing to integrate API key authentication middleware into my ASP.NET Core application. I’ve written before about using custom middleware ...

Parameter binding from forms, antiforgery tokens, and Native AOT are now supported in ASP.NET Core. Here’s how to take advantage of them. ASP.NET Core offers a simplified hosting model, called minimal ...

In the new .NET 8 Preview 3, Microsoft introduced initial support for native Ahead-of-Time (AOT) compilation in the framework's web-dev component, ASP.NET Core. While choosing the AOT publishing ...

To implement custom Authentication and Authorization in an ASP.NET Core MVC + Web API using .NET 9.0, you'll need to follow several steps. This example will demonstrate how to create a simple custom ...

You have a number of different ways to store and retrieve data between requests in ASP.NET Core MVC applications. Here’s how to take advantage of them. Because HTTP is a stateless protocol, state ...

This content is for a previous version of .NET. New development should use [ASP.NET Core](/aspnet/core/introduction-to-aspnet-core). For more information on using Web ...