A module in Roxen 2.0 before 2.0.92, and 2.1 before 2.1.264, does not properly decode UTF-8, Mac and ISO-2202 encoded URLs, which could allow a remote attacker to execute arbitrary commands or view arbitrary files via an encoded URL.
Roxen web server earlier than 2.0.69 allows allows remote attackers to bypass access restrictions, list directory contents, and read source code by inserting a null character (%00) to the URL.