1902756969 reggie CommonController.java download path traversal

A vulnerability classified as critical has been found in 1902756969 reggie 1.0. Affected is the function download of the file src/main/java/com/itheima/reggie/controller/CommonController.java. The manipulation of the argument name leads to path traversal. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.