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-rw-r--r--app/controllers/statuses_controller.rb4
1 files changed, 4 insertions, 0 deletions
diff --git a/app/controllers/statuses_controller.rb b/app/controllers/statuses_controller.rb
index bc711a8e4..cf750f4bb 100644
--- a/app/controllers/statuses_controller.rb
+++ b/app/controllers/statuses_controller.rb
@@ -19,6 +19,10 @@ class StatusesController < ApplicationController
   before_action :set_referrer_policy_header, only: [:show]
   before_action :set_cache_headers
 
+  content_security_policy only: :embed do |p|
+    p.frame_ancestors(false)
+  end
+
   def show
     respond_to do |format|
       format.html do