ASP.NET Core planning for .NET 11 is now in progress! This roadmap is currently just a placeholder. We'll update the roadmap with specific planned features as planning progresses. This issue ...

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 ...

CVE-2025-55315 is an HTTP request smuggling bug leading to information leaks, file content tampering, and server crashes. Microsoft’s October Patch Tuesday updates addressed a critical-severity ...

Learn how to use in-memory caching, distributed caching, hybrid caching, response caching, or output caching in ASP.NET Core to boost the performance and scalability of your minimal API applications.

The Initial Access Broker (IAB) known as Gold Melody has been attributed to a campaign that exploits leaked ASP.NET machine keys to obtain unauthorized access to organizations and peddle that access ...

Microsoft is warning of an insecure practice wherein software developers are incorporating publicly disclosed ASP.NET machine keys from publicly accessible resources, thereby putting their ...

Microsoft warns that attackers are deploying malware in ViewState code injection attacks using static ASP. NET machine keys found online. As Microsoft Threat Intelligence experts recently discovered, ...

In December 2024, Microsoft Threat Intelligence observed limited activity by an unattributed threat actor using a publicly available, static ASP.NET machine key to inject malicious code and deliver ...

This issue is a locked mirror of dotnet/aspnetcore#58598. See that issue for discussion. We'll be reshipping ASP.NET Core 2.1 as ASP.NET Core 2.3 and encourage ASP.NET Core 2.2 users to update to it.