Yes!
The Jetty distribution includes a CGI servlet org.mortbay.servlet.CGI. You configure it in your xml configuration file along these lines:
<Call name="addContext"> <Arg>/cgi-bin/*</Arg> <Set name="ResourceBase">/home/jules/www/cgi-bin</Set> <Set name="ServingDynamicServlets">TRUE</Set> <Call name="addServlet"> <Arg>Common Gateway Interface</Arg> <Arg>/</Arg> <Arg>com.mortbay.Servlet.CGI</Arg> <Put name="Path">/usr/local/bin:/usr/ucb:/bin:/usr/bin</Put> </Call> </Call>