diff --git a/wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php b/wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php
index d6afdef470..11bc499fc6 100644
--- a/wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php
+++ b/wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php
@@ -337,6 +337,13 @@ class WP_REST_Posts_Controller extends WP_REST_Controller {
 			}
 		}
 
+		if (
+			isset( $registered['search_semantics'], $request['search_semantics'] )
+			&& 'exact' === $request['search_semantics']
+		) {
+			$args['exact'] = true;
+		}
+
 		$args = $this->prepare_tax_query( $args, $request );
 
 		// Force the post_type argument, since it's not a user input variable.
@@ -2886,6 +2893,12 @@ class WP_REST_Posts_Controller extends WP_REST_Controller {
 			);
 		}
 
+		$query_params['search_semantics'] = array(
+			'description' => __( 'How to interpret the search input.' ),
+			'type'        => 'string',
+			'enum'        => array( 'exact' ),
+		);
+
 		$query_params['offset'] = array(
 			'description' => __( 'Offset the result set by a specific number of items.' ),
 			'type'        => 'integer',
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 5a02630db2..b251507a86 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.7-alpha-59033';
+$wp_version = '6.7-alpha-59034';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.