Improper escaping of output in mod_rewrite in Apache HTTP Server 2.4.fifty nine and previously allows an attacker to map URLs to filesystem areas which have been permitted to be served via the server but aren't deliberately/instantly reachable by any URL, resulting in code execution or source code disclosure. sudo certbot https://apachewebserversupport64983.wikigiogio.com/805892/the_smart_trick_of_apache_web_server_support_that_no_one_is_discussing