Validations in minimal APIs fails on several types from System.Text.Json

[anthonymastreanvae]

Is there an existing issue for this?

• I have searched the existing issues

Describe the bug

With data annotation based validation enabled in minimal APIs, the validation subsystem throws an unhandled exception if it encounters a request that is a JsonElement or JsonDocument or is a type that contains a public property with one of those types.

fail: Microsoft.AspNetCore.Diagnostics.ExceptionHandlerMiddleware[1]
      An unhandled exception has occurred while executing the request.
      System.InvalidOperationException: Property 'this[]' not found on type 'JsonElement'.

https://learn.microsoft.com/en-us/aspnet/core/release-notes/aspnetcore-10.0?view=aspnetcore-10.0#validation-support-in-minimal-apis

Expected Behavior

I expect these types to be acceptable, as is, I need to change the request or request property type to string or maybe BinaryData and perform serialization in the endpoint handler or accept the raw HttpRequest.Body stream.

Steps To Reproduce

builder.Services.AddValidation();

app.MapPost("/test", ([FromBody] JsonElement request) => 
{
    // ...
});

Exceptions (if any)

fail: Microsoft.AspNetCore.Diagnostics.ExceptionHandlerMiddleware[1]
      An unhandled exception has occurred while executing the request.
      System.InvalidOperationException: Property 'this[]' not found on type 'JsonElement'.
         at Microsoft.Extensions.Validation.ValidatablePropertyInfo.ValidateAsync(Object value, ValidateContext context, CancellationToken cancellationToken)
         at Microsoft.Extensions.Validation.ValidatableTypeInfo.ValidateMembersAsync(Object value, ValidateContext context, CancellationToken cancellationToken)
         at Microsoft.Extensions.Validation.ValidatableTypeInfo.ValidateAsync(Object value, ValidateContext context, CancellationToken cancellationToken)
         at Microsoft.Extensions.Validation.ValidatablePropertyInfo.ValidateAsync(Object value, ValidateContext context, CancellationToken cancellationToken)
         at Microsoft.Extensions.Validation.ValidatableTypeInfo.ValidateMembersAsync(Object value, ValidateContext context, CancellationToken cancellationToken)
         at Microsoft.Extensions.Validation.ValidatableTypeInfo.ValidateAsync(Object value, ValidateContext context, CancellationToken cancellationToken)
         at Microsoft.Extensions.Validation.ValidatablePropertyInfo.ValidateAsync(Object value, ValidateContext context, CancellationToken cancellationToken)
         at Microsoft.Extensions.Validation.ValidatableTypeInfo.ValidateMembersAsync(Object value, ValidateContext context, CancellationToken cancellationToken)
         at Microsoft.Extensions.Validation.ValidatableTypeInfo.ValidateAsync(Object value, ValidateContext context, CancellationToken cancellationToken)
         at Microsoft.Extensions.Validation.ValidatableParameterInfo.ValidateAsync(Object value, ValidateContext context, CancellationToken cancellationToken)
         at Microsoft.AspNetCore.Http.Validation.ValidationEndpointFilterFactory.<>c__DisplayClass1_0.<<Create>b__0>d.MoveNext()
      --- End of stack trace from previous location ---

.NET Version

.NET 10