A vulnerability exists in the test.php script of OmniHTTPd. The script makes a classic coding error -- trusting unsanitized user input. The query string and cookie values are returned unfiltered. Of most concern, of course, is the query string:
The impact of this vulnerability will vary by site. A production site would most likely not have the sample scripts installed, but it would be wise to check.
"The reason the mainstream is thought of as a stream is because it is so shallow." - Author Unknown