The Administration console for Abyss Web Server 1.0.3 allows remote attackers to read files without providing login credentials via an HTTP request to a target file that ends in a "+" character.
http://www.securityfocus.com/bid/5549
http://www.iss.net/security_center/static/9956.php
http://www.aprelium.com/news/patch1033.html
http://archives.neohapsis.com/archives/bugtraq/2002-08/0229.html