2 files changed, 12 insertions, 2 deletions
diff --git a/actionpack/lib/action_dispatch/middleware/actionable_exceptions.rb b/actionpack/lib/action_dispatch/middleware/actionable_exceptions.rb
index 059fcdcfd4..e94cc46603 100644
--- a/actionpack/lib/action_dispatch/middleware/actionable_exceptions.rb
+++ b/actionpack/lib/action_dispatch/middleware/actionable_exceptions.rb
@@ -16,9 +16,9 @@ module ActionDispatch
       request = ActionDispatch::Request.new(env)
       return @app.call(env) unless actionable_request?(request)
 
-      ActiveSupport::ActionableError.dispatch(request.params["error"], request.params["action"])
+      ActiveSupport::ActionableError.dispatch(request.params[:error].to_s.safe_constantize, request.params[:action])
 
-      redirect_to request.params["location"]
+      redirect_to request.params[:location]
     end
 
     private
diff --git a/actionpack/test/dispatch/actionable_exceptions_test.rb b/actionpack/test/dispatch/actionable_exceptions_test.rb
index ae382e201e..9215a91e9c 100644
--- a/actionpack/test/dispatch/actionable_exceptions_test.rb
+++ b/actionpack/test/dispatch/actionable_exceptions_test.rb
@@ -67,4 +67,14 @@ class ActionableExceptionsTest < ActionDispatch::IntegrationTest
       }
     end
   end
+
+  test "cannot dispatch Inexistent errors" do
+    assert_raise ActiveSupport::ActionableError::NonActionable do
+      post ActionDispatch::ActionableExceptions.endpoint, params: {
+        error: "",
+        action: "Inexistent action",
+        location: "/",
+      }
+    end
+  end
 end