Merge pull request #11646 from camptocamp/backport/11643-to-2.7

[Backport 2.7] Fix small cache poisoning

geoportal/c2cgeoportal_geoportal/views/dynamic.py

@@ -1,4 +1,4 @@
-# Copyright (c) 2018-2021, Camptocamp SA
+# Copyright (c) 2018-2025, Camptocamp SA
 # All rights reserved.
 
 # Redistribution and use in source and binary forms, with or without
@@ -121,6 +121,7 @@ def _interface(
 
     @view_config(route_name="dynamic", renderer="json")  # type: ignore
     def dynamic(self) -> Dict[str, Any]:
+        self.request.response.headers["Vary"] = "Host"
         original_interface_name = self.request.params.get("interface")
         interface_name = self.request.get_organization_interface(original_interface_name)