diff --git a/lib/Cake/Network/CakeRequest.php b/lib/Cake/Network/CakeRequest.php
index 672a6799a26..b0aa861052d 100644
--- a/lib/Cake/Network/CakeRequest.php
+++ b/lib/Cake/Network/CakeRequest.php
@@ -915,6 +915,17 @@ public function input($callback = null) {
 		return $input;
 	}
 
+/**
+ * Modify data originally from `php://input`. Useful for altering json/xml data
+ * in middleware or DispatcherFilters before it gets to RequestHandlerComponent
+ *
+ * @param string $input A string to replace original parsed data from input()
+ * @return void
+ */
+	public function setInput($input) {
+		$this->_input = $input;
+	}
+
 /**
  * Allow only certain HTTP request methods. If the request method does not match
  * a 405 error will be shown and the required "Allow" response header will be set.