chainerrl-visualizer路径遍历漏洞

chainerrl-visualizer is Chainer’s open source way to visually analyze the behavior of ChainerRL agents to make debugging easier. chainerrl-visualizer suffers from a path traversal vulnerability that stems from a failure of the Flask send_file function to properly filter the resource or file path for special elements in a resource or file path, which can be exploited to access arbitrary files and directories stored on the file system.