Microsoft Security Advisory CVE-2026-40372 – ASP.NET Core Elevation of Privilege

Executive Summary: A bug in Microsoft.AspNetCore.DataProtection 10.0.0-10.0.6 NuGet packages can give an attacker the opportunity to execute an Elevation of Privilege attack by forging authentication cookies, and also allows some protected payloads to be decrypted. If an attacker used forged...