Oliver Library Server v5 contains a file download vulnerability that allows unauthenticated attackers to access arbitrary system files through unsanitized input in the FileServlet endpoint. Attackers can exploit the vulnerability by manipulating the 'fileName' parameter to download sensitive files from the server's filesystem.
An arbitrary file download vulnerability in Oliver v5 Library Server Versions < 5.00.008.053 via the FileServlet function allows for arbitrary file download by an attacker using unsanitized user supplied input.