NanoHTTPD (,2.3.1), fixed in [2.3.2]
An issue was discovered in RouterNanoHTTPD.java in NanoHTTPD through 2.3.1. The
GeneralHandler class implements a basic GET handler that prints debug information as an HTML page. Any web server that extends this class without implementing its own GET handler is vulnerable to reflected XSS, because the
GeneralHandler GET handler prints user input passed through the query string without any sanitization.
Implement a different general GET handler that does not use user-input