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-rw-r--r--synapse/rest/media/v1/download_resource.py3
1 files changed, 3 insertions, 0 deletions
diff --git a/synapse/rest/media/v1/download_resource.py b/synapse/rest/media/v1/download_resource.py
index 66a01559e1..24d3ae5bbc 100644
--- a/synapse/rest/media/v1/download_resource.py
+++ b/synapse/rest/media/v1/download_resource.py
@@ -50,6 +50,9 @@ class DownloadResource(DirectServeResource):
             b" media-src 'self';"
             b" object-src 'self';",
         )
+        request.setHeader(
+            b"Referrer-Policy", b"no-referrer",
+        )
         server_name, media_id, name = parse_media_id(request)
         if server_name == self.server_name:
             await self.media_repo.get_local_media(request, media_id, name)