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authorDionysis Grigoropoulos <dgrig@erethon.com>2020-03-23 11:48:28 +0200
committerGitHub <noreply@github.com>2020-03-23 09:48:28 +0000
commit96071eea8f5e18282c07da3a61e4b3431f694cc5 (patch)
treede65f5ae04b5be45a0381b123971b41cd142379b
parentClean-up some auth/login REST code (#7115) (diff)
downloadsynapse-96071eea8f5e18282c07da3a61e4b3431f694cc5.tar.xz
Set Referrer-Policy to no-referrer for media (#7009)
-rw-r--r--changelog.d/7009.feature1
-rw-r--r--synapse/rest/media/v1/download_resource.py3
2 files changed, 4 insertions, 0 deletions
diff --git a/changelog.d/7009.feature b/changelog.d/7009.feature
new file mode 100644
index 0000000000..cd2705d5ba
--- /dev/null
+++ b/changelog.d/7009.feature
@@ -0,0 +1 @@
+Set `Referrer-Policy` header to `no-referrer` on media downloads.
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)