Ticket #38226: 38226.patch

src/wp-includes/class-http.php

@@ -361 +361 @@
                 // Work around a bug in Requests when the path starts with // See https://github.com/rmccue/Requests/issues/231
                 $url = preg_replace( '!^(\w+://[^/]+)//(.*)$!i', '$1/$2', $url );
 
+                // Avoid issues where mbstring.func_overload is enabled
+                mbstring_binary_safe_encoding();
+
                 try {
                         $requests_response = Requests::request( $url, $headers, $data, $type, $options );
 
@@ -375 +378 @@
                         $response = new WP_Error( 'http_request_failed', $e->getMessage() );
                 }
 
+                reset_mbstring_encoding();
+
                 /**
                  * Fires after an HTTP API response is received and before the response is returned.
                  *