diff --git a/Neos.Flow/Classes/Http/Middleware/RequestBodyParsingMiddleware.php b/Neos.Flow/Classes/Http/Middleware/RequestBodyParsingMiddleware.php
index 748372fdc2..e360b754ec 100644
--- a/Neos.Flow/Classes/Http/Middleware/RequestBodyParsingMiddleware.php
+++ b/Neos.Flow/Classes/Http/Middleware/RequestBodyParsingMiddleware.php
@@ -51,6 +51,9 @@ public function process(ServerRequestInterface $request, RequestHandlerInterface
     protected function parseRequestBody(ServerRequestInterface $httpRequest)
     {
         $requestBody = $httpRequest->getBody()->getContents();
+        if ($httpRequest->getBody()->isSeekable()) {
+            $httpRequest->getBody()->rewind();
+        }
         if ($requestBody === null || $requestBody === '') {
             return $requestBody;
         }