2 files changed, 4 insertions, 2 deletions
diff --git a/synapse/rest/media/v1/download_resource.py b/synapse/rest/media/v1/download_resource.py
index a45ee9483e..dfb87ffd15 100644
--- a/synapse/rest/media/v1/download_resource.py
+++ b/synapse/rest/media/v1/download_resource.py
@@ -15,7 +15,7 @@
 
 from ._base import parse_media_id, respond_with_file, respond_404
 from twisted.web.resource import Resource
-from synapse.http.server import request_handler
+from synapse.http.server import request_handler, set_cors_headers
 
 from twisted.web.server import NOT_DONE_YET
 from twisted.internet import defer
@@ -45,6 +45,7 @@ class DownloadResource(Resource):
     @request_handler()
     @defer.inlineCallbacks
     def _async_render_GET(self, request):
+        set_cors_headers(request)
         request.setHeader(
             "Content-Security-Policy",
             "default-src 'none';"
diff --git a/synapse/rest/media/v1/thumbnail_resource.py b/synapse/rest/media/v1/thumbnail_resource.py
index 0b9e1de1a7..d8f54adc99 100644
--- a/synapse/rest/media/v1/thumbnail_resource.py
+++ b/synapse/rest/media/v1/thumbnail_resource.py
@@ -17,7 +17,7 @@
 from ._base import parse_media_id, respond_404, respond_with_file
 from twisted.web.resource import Resource
 from synapse.http.servlet import parse_string, parse_integer
-from synapse.http.server import request_handler
+from synapse.http.server import request_handler, set_cors_headers
 
 from twisted.web.server import NOT_DONE_YET
 from twisted.internet import defer
@@ -48,6 +48,7 @@ class ThumbnailResource(Resource):
     @request_handler()
     @defer.inlineCallbacks
     def _async_render_GET(self, request):
+        set_cors_headers(request)
         server_name, media_id, _ = parse_media_id(request)
         width = parse_integer(request, "width")
         height = parse_integer(request, "height")