Index: src/wp-admin/includes/file.php
===================================================================
--- src/wp-admin/includes/file.php	(revision 25200)
+++ src/wp-admin/includes/file.php	(working copy)
@@ -239,6 +239,7 @@
 	}
 
 	$file = apply_filters( 'wp_handle_upload_prefilter', $file );
+	$overrides = apply_filters( 'wp_handle_upload_overrides', $overrides );
 
 	// You may define your own function and pass the name in $overrides['upload_error_handler']
 	$upload_error_handler = 'wp_handle_upload_error';
@@ -377,6 +378,9 @@
 		}
 	}
 
+	$file = apply_filters( 'wp_handle_sideload_prefilter', $file );
+	$overrides = apply_filters( 'wp_handle_sideload_overrides', $overrides );
+
 	// You may define your own function and pass the name in $overrides['upload_error_handler']
 	$upload_error_handler = 'wp_handle_upload_error';