Verify binary file responses in ASP.NET Core 11 with generated OpenAPI schemas, exact HTTP bytes, media types and a runnable twelve-check RC1 proof.
Map C# Obsolete metadata into ASP.NET Core 11 OpenAPI contracts, verify deprecated operations and schemas, and gate unintended drift in CI.
Model fixed multi-shape JSON with C# 15 unions, resolve ambiguous reads, verify OpenAPI anyOf output, and protect ASP.NET Core clients before rollout.
Pin the .NET 11 build-time OpenAPI host environment in CI, isolate generated contracts, compare drift, and block development-only endpoint leaks.
Microsoft.OpenApi CVE-2026-49451 can terminate an in-process parser when it receives a crafted OpenAPI document with circular schema references.If a security…
