diff --git a/config/initializers/content_security_policy.rb b/config/initializers/content_security_policy.rb
index a40763fbe5..9b83fd342c 100644
--- a/config/initializers/content_security_policy.rb
+++ b/config/initializers/content_security_policy.rb
@@ -14,17 +14,6 @@ def host_to_url(str)
   uri.to_s
 end
 
-base_host = Rails.configuration.x.web_domain
-
-assets_host   = Rails.configuration.action_controller.asset_host
-assets_host ||= host_to_url(base_host)
-
-media_host   = host_to_url(ENV['S3_ALIAS_HOST'])
-media_host ||= host_to_url(ENV['S3_CLOUDFRONT_HOST'])
-media_host ||= host_to_url(ENV['AZURE_ALIAS_HOST'])
-media_host ||= host_to_url(ENV['S3_HOSTNAME']) if ENV['S3_ENABLED'] == 'true'
-media_host ||= assets_host
-
 def sso_host
   return unless ENV['ONE_CLICK_SSO_LOGIN'] == 'true'
   return unless ENV['OMNIAUTH_ONLY'] == 'true'
@@ -43,35 +32,50 @@ def sso_host
   end
 end
 
-Rails.application.config.content_security_policy do |p|
-  p.base_uri        :none
-  p.default_src     :none
-  p.frame_ancestors :none
-  p.font_src        :self, assets_host
-  p.img_src         :self, :data, :blob, assets_host, media_host
-  p.style_src       :self, assets_host
-  p.media_src       :self, :data, assets_host, media_host
-  p.frame_src       :self, :https
-  p.manifest_src    :self, assets_host
-
-  if sso_host.present?
-    p.form_action     :self, sso_host
+unless Rails.env.development?
+  assets_host = Rails.configuration.action_controller.asset_host || "https://#{ENV['WEB_DOMAIN'] || ENV['LOCAL_DOMAIN']}"
+  data_hosts = [assets_host]
+
+  if ENV['S3_ENABLED'] == 'true' || ENV['AZURE_ENABLED'] == 'true'
+    attachments_host = host_to_url(ENV['S3_ALIAS_HOST'] || ENV['S3_CLOUDFRONT_HOST'] || ENV['AZURE_ALIAS_HOST'] || ENV['S3_HOSTNAME'] || "s3-#{ENV['S3_REGION'] || 'us-east-1'}.amazonaws.com")
+  elsif ENV['SWIFT_ENABLED'] == 'true'
+    attachments_host = ENV['SWIFT_OBJECT_URL']
+    attachments_host = "https://#{Addressable::URI.parse(attachments_host).host}"
   else
-    p.form_action     :self
+    attachments_host = nil
   end
 
-  p.child_src       :self, :blob, assets_host
-  p.worker_src      :self, :blob, assets_host
+  data_hosts << attachments_host unless attachments_host.nil?
 
-  if Rails.env.development?
-    webpacker_public_host = ENV.fetch('WEBPACKER_DEV_SERVER_PUBLIC', Webpacker.config.dev_server[:public])
-    webpacker_urls = %w(ws http).map { |protocol| "#{protocol}#{Webpacker.dev_server.https? ? 's' : ''}://#{webpacker_public_host}" }
+  if ENV['PAPERCLIP_ROOT_URL']
+    url = Addressable::URI.parse(assets_host) + ENV['PAPERCLIP_ROOT_URL']
+    data_hosts << "https://#{url.host}"
+  end
 
-    p.connect_src :self, :data, :blob, assets_host, media_host, Rails.configuration.x.streaming_api_base_url, *webpacker_urls
-    p.script_src  :self, :unsafe_inline, :unsafe_eval, assets_host
-  else
-    p.connect_src :self, :data, :blob, assets_host, media_host, Rails.configuration.x.streaming_api_base_url
-    p.script_src  :self, assets_host, "'wasm-unsafe-eval'"
+  data_hosts.concat(ENV['EXTRA_DATA_HOSTS'].split('|')) if ENV['EXTRA_DATA_HOSTS']
+
+  data_hosts.uniq!
+
+  Rails.application.config.content_security_policy do |p|
+    p.base_uri        :none
+    p.default_src     :none
+    p.frame_ancestors :none
+    p.script_src      :self, assets_host, "'wasm-unsafe-eval'"
+    p.font_src        :self, assets_host
+    p.img_src         :self, :data, :blob, *data_hosts
+    p.style_src       :self, assets_host
+    p.media_src       :self, :data, *data_hosts
+    p.frame_src       :self, :https
+    p.child_src       :self, :blob, assets_host
+    p.worker_src      :self, :blob, assets_host
+    p.connect_src     :self, :blob, :data, Rails.configuration.x.streaming_api_base_url, *data_hosts
+    p.manifest_src    :self, assets_host
+
+    if sso_host.present?
+      p.form_action     :self, sso_host
+    else
+      p.form_action     :self
+    end
   end
 end
 
diff --git a/spec/requests/content_security_policy_spec.rb b/spec/requests/content_security_policy_spec.rb
index efd0b9d3cc..d327ac1b45 100644
--- a/spec/requests/content_security_policy_spec.rb
+++ b/spec/requests/content_security_policy_spec.rb
@@ -12,15 +12,15 @@ describe 'Content-Security-Policy' do
       "default-src 'none'",
       "frame-ancestors 'none'",
       "font-src 'self' https://cb6e6126.ngrok.io",
-      "img-src 'self' data: blob: https://cb6e6126.ngrok.io https://cb6e6126.ngrok.io",
+      "img-src 'self' data: blob: https://cb6e6126.ngrok.io",
       "style-src 'self' https://cb6e6126.ngrok.io 'nonce-ZbA+JmE7+bK8F5qvADZHuQ=='",
-      "media-src 'self' data: https://cb6e6126.ngrok.io https://cb6e6126.ngrok.io",
+      "media-src 'self' data: https://cb6e6126.ngrok.io",
       "frame-src 'self' https:",
       "manifest-src 'self' https://cb6e6126.ngrok.io",
       "form-action 'self'",
       "child-src 'self' blob: https://cb6e6126.ngrok.io",
       "worker-src 'self' blob: https://cb6e6126.ngrok.io",
-      "connect-src 'self' data: blob: https://cb6e6126.ngrok.io https://cb6e6126.ngrok.io ws://localhost:4000",
+      "connect-src 'self' blob: data: ws://localhost:4000 https://cb6e6126.ngrok.io",
       "script-src 'self' https://cb6e6126.ngrok.io 'wasm-unsafe-eval'"
     )
   end