Researcher warns that many .NET applications might be vulnerable to arbitrary file writes because .NET’s HTTP client proxy classes also accept non-HTTP URLs, a behavior developers are responsible to ...

This unhandled exception occurs primarily because the .NET Framework application cannot write essential data to the disk. You are most likely to encounter this error ...

Microsoft is focusing on long-term stability and more flexible developer tooling with its new “AI-native” Visual Studio 2026 IDE and .NET 10. These new releases are aimed at two main business goals: ...

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 ...

Microsoft has expanded its .NET bug bounty program and increased rewards to $40,000 for some .NET and ASP.NET Core vulnerabilities. Madeline Eckert, a senior program manager for Researcher Incentives ...

After teasing it earlier this year, Microsoft announced the general availability of .NET 9, the latest version of the company’s cross-platform framework for building modern applications and cloud ...

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.

The web-dev ASP.NET Core framework and Xamarin.Forms' successor .NET MAUI received the lion's share of dev attention in the seventh preview of .NET 9 as Microsoft preps for a November launch at .NET ...