Take advantage of security headers in ASP.NET Core MVC 5 to protect your website against cross-site scripting, code injection, clickjacking, and other attacks. ASP.NET Core MVC 5 is a lightweight, ...

To start my series on ASP.NET Core security, I'll show how to set up authentication to register, log in and log out a user account in an ASP.NET Core MVC application. To get started, open Visual ...

Patching is not enough: applications embedding the insecure library will need to be rebuilt, and affected tokens and cookies expired. Developers are advised to check their applications after Microsoft ...

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 ...

CVE-2025-55315 enables HTTP request smuggling in ASP.NET Core’s Kestrel web server Attackers can bypass controls, access credentials, alter files, or crash the server Microsoft released updates for ...

Microsoft has released out-of-band (OOB) security updates to patch a critical ASP.NET Core privilege escalation vulnerability. The security flaw (tracked as CVE-2026-40372) was found in the ASP.NET ...