diff --git a/src/wp-includes/rest-api/endpoints/class-wp-rest-comments-controller.php b/src/wp-includes/rest-api/endpoints/class-wp-rest-comments-controller.php
index e5a9541..833dd1d 100644
--- a/src/wp-includes/rest-api/endpoints/class-wp-rest-comments-controller.php
+++ b/src/wp-includes/rest-api/endpoints/class-wp-rest-comments-controller.php
@@ -990,6 +990,9 @@ class WP_REST_Comments_Controller extends WP_REST_Controller {
 					'description'     => __( 'The content for the object.' ),
 					'type'            => 'object',
 					'context'         => array( 'view', 'edit', 'embed' ),
+					'arg_options'     => array(
+						'sanitize_callback' => null, // Note: sanitization implemented in callback
+					),
 					'properties'      => array(
 						'raw'         => array(
 							'description'     => __( 'Content for the object, as it exists in the database.' ),
diff --git a/src/wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php b/src/wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php
index 53692d8..abdebc8 100644
--- a/src/wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php
+++ b/src/wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php
@@ -1619,6 +1619,9 @@ class WP_REST_Posts_Controller extends WP_REST_Controller {
 						'description' => __( 'The title for the object.' ),
 						'type'        => 'object',
 						'context'     => array( 'view', 'edit', 'embed' ),
+						'arg_options' => array(
+							'sanitize_callback' => null, // Note: sanitization implemented in callback
+						),
 						'properties'  => array(
 							'raw' => array(
 								'description' => __( 'Title for the object, as it exists in the database.' ),
@@ -1640,6 +1643,9 @@ class WP_REST_Posts_Controller extends WP_REST_Controller {
 						'description' => __( 'The content for the object.' ),
 						'type'        => 'object',
 						'context'     => array( 'view', 'edit' ),
+						'arg_options' => array(
+							'sanitize_callback' => null, // Note: sanitization implemented in callback
+						),
 						'properties'  => array(
 							'raw' => array(
 								'description' => __( 'Content for the object, as it exists in the database.' ),
@@ -1675,6 +1681,9 @@ class WP_REST_Posts_Controller extends WP_REST_Controller {
 						'description' => __( 'The excerpt for the object.' ),
 						'type'        => 'object',
 						'context'     => array( 'view', 'edit', 'embed' ),
+						'arg_options' => array(
+							'sanitize_callback' => null, // Note: sanitization implemented in callback
+						),
 						'properties'  => array(
 							'raw' => array(
 								'description' => __( 'Excerpt for the object, as it exists in the database.' ),