diff --git a/src/wp-admin/includes/class-wp-site-health.php b/src/wp-admin/includes/class-wp-site-health.php
index d0de043789..f20bc947c3 100644
--- a/src/wp-admin/includes/class-wp-site-health.php
+++ b/src/wp-admin/includes/class-wp-site-health.php
@@ -1969,7 +1969,7 @@ class WP_Site_Health {
 					/* translators: 1: The HTTP error code. 2: The HTTP error message. */
 					__( 'The REST API call gave the following unexpected result: (%1$d) %2$s.' ),
 					wp_remote_retrieve_response_code( $r ),
-					wp_remote_retrieve_body( $r )
+					esc_html( wp_remote_retrieve_body( $r ) )
 				)
 			);
 		} else {