diff --git a/FluentValidation.AutoValidation.Mvc/src/Configuration/AutoValidationMvcConfiguration.cs b/FluentValidation.AutoValidation.Mvc/src/Configuration/AutoValidationMvcConfiguration.cs
index dab1c4b..8fb82e2 100644
--- a/FluentValidation.AutoValidation.Mvc/src/Configuration/AutoValidationMvcConfiguration.cs
+++ b/FluentValidation.AutoValidation.Mvc/src/Configuration/AutoValidationMvcConfiguration.cs
@@ -49,6 +49,11 @@ public class AutoValidationMvcConfiguration
         /// </summary>
         public bool EnableCustomBindingSourceAutomaticValidation { get; set; } = false;
 
+        /// <summary>
+        /// Enables asynchronous automatic validation for parameters not bound from any binding source (typically parameters without a declared or inferred binding source).
+        /// </summary>
+        public bool EnableNullBindingSourceAutomaticValidation { get; set; } = false;
+
         /// <summary>
         /// Holds the overridden result factory. This property is meant for infrastructure and should not be used by application code.
         /// </summary>
diff --git a/FluentValidation.AutoValidation.Mvc/src/Filters/FluentValidationAutoValidationActionFilter.cs b/FluentValidation.AutoValidation.Mvc/src/Filters/FluentValidationAutoValidationActionFilter.cs
index 2ae20dd..c0ae922 100644
--- a/FluentValidation.AutoValidation.Mvc/src/Filters/FluentValidationAutoValidationActionFilter.cs
+++ b/FluentValidation.AutoValidation.Mvc/src/Filters/FluentValidationAutoValidationActionFilter.cs
@@ -141,7 +141,8 @@ private bool HasValidBindingSource(BindingSource? bindingSource)
                    (autoValidationMvcConfiguration.EnableFormBindingSourceAutomaticValidation && bindingSource == BindingSource.Form) ||
                    (autoValidationMvcConfiguration.EnableQueryBindingSourceAutomaticValidation && bindingSource == BindingSource.Query) ||
                    (autoValidationMvcConfiguration.EnablePathBindingSourceAutomaticValidation && bindingSource == BindingSource.Path) ||
-                   (autoValidationMvcConfiguration.EnableCustomBindingSourceAutomaticValidation && bindingSource == BindingSource.Custom);
+                   (autoValidationMvcConfiguration.EnableCustomBindingSourceAutomaticValidation && bindingSource == BindingSource.Custom) ||
+                   (autoValidationMvcConfiguration.EnableNullBindingSourceAutomaticValidation && bindingSource == null);
         }
 
         private void HandleUnvalidatedEntries(ActionExecutingContext context)
diff --git a/README.md b/README.md
index 36cf133..3ac5fc5 100644
--- a/README.md
+++ b/README.md
@@ -61,6 +61,7 @@ app.MapPost("/", (SomeOtherModel someOtherModel) => $"Hello again {someOtherMode
 | EnableQueryBindingSourceAutomaticValidation  | `true`                   | Enables asynchronous automatic validation for parameters bound from `BindingSource.Query` binding sources (typically parameters decorated with the `[FromQuery]` attribute).                                                                                                                                                                                                                             |
 | EnablePathBindingSourceAutomaticValidation   | `false`                  | Enables asynchronous automatic validation for parameters bound from `BindingSource.Path` binding sources (typically parameters decorated with the `[FromRoute]` attribute).                                                                                                                                                                                                                              |
 | EnableCustomBindingSourceAutomaticValidation | `false`                  | Enables asynchronous automatic validation for parameters bound from `BindingSource.Custom` binding sources.                                                                                                                                                                                                                                                                                              |
+| EnableNullBindingSourceAutomaticValidation   | `false`                  | Enables asynchronous automatic validation for parameters not bound from any binding source (typically parameters without a declared or inferred binding source).                                                                                                                                                                                                                                         |
 
 ```
 using SharpGrip.FluentValidation.AutoValidation.Mvc.Extensions;