2 files changed, 3 insertions, 2 deletions
diff --git a/actionpack/lib/action_dispatch/request/session.rb b/actionpack/lib/action_dispatch/request/session.rb
index 74ba6466cf..3547a8604f 100644
--- a/actionpack/lib/action_dispatch/request/session.rb
+++ b/actionpack/lib/action_dispatch/request/session.rb
@@ -101,11 +101,13 @@ module ActionDispatch
 
       # Returns keys of the session as Array.
       def keys
+        load_for_read!
         @delegate.keys
       end
 
       # Returns values of the session as Array.
       def values
+        load_for_read!
         @delegate.values
       end
 
diff --git a/actionpack/lib/action_dispatch/request/utils.rb b/actionpack/lib/action_dispatch/request/utils.rb
index 3615e4b1d8..4f79c4c21e 100644
--- a/actionpack/lib/action_dispatch/request/utils.rb
+++ b/actionpack/lib/action_dispatch/request/utils.rb
@@ -1,8 +1,7 @@
 module ActionDispatch
   class Request
     class Utils # :nodoc:
-      mattr_accessor :perform_deep_munge
-      self.perform_deep_munge = true
+      mattr_accessor :perform_deep_munge, default: true
 
       def self.each_param_value(params, &block)
         case params