1 files changed, 6 insertions, 0 deletions
diff --git a/synapse/config/oidc.py b/synapse/config/oidc.py
index 8ba0ba2c36..3ddf65a3e9 100644
--- a/synapse/config/oidc.py
+++ b/synapse/config/oidc.py
@@ -356,6 +356,9 @@ def _parse_oidc_config_dict(
         additional_authorization_parameters=oidc_config.get(
             "additional_authorization_parameters", {}
         ),
+        passthrough_authorization_parameters=oidc_config.get(
+            "passthrough_authorization_parameters", []
+        ),
     )
 
 
@@ -501,3 +504,6 @@ class OidcProviderConfig:
 
     # Additional parameters that will be passed to the authorization grant URL
     additional_authorization_parameters: Mapping[str, str]
+
+    # Allow query parameters to the redirect endpoint that will be passed to the authorization grant URL
+    passthrough_authorization_parameters: Collection[str]