Acme.Serve 1.7, as used in Cisco Secure ACS Unix and possibly other products, allows remote attackers to read arbitrary files by prepending several / (slash) characters to the URI.
Directory traversal vulnerability in cal_make.pl in PerlCal allows remote attackers to read arbitrary files via a .. (dot dot) in the p0 parameter.
Multiple directory traversal vulnerabilities in thttpd 2.07 beta 0.4, when running on Windows, allow remote attackers to read arbitrary files via a URL that contains (1) a hex-encoded backslash dot-dot sequence ("%5C..") or (2) a drive letter (such as "C:").
Directory traversal vulnerability in thttpd, when using virtual hosting, allows remote attackers to read arbitrary files via .. (dot dot) sequences in the Host: header.