Komodo IDE starts a debugger bound to 0.0.0.0, by default. Maker ActiveState's reaction was rather irritating to me at the time when I asked for an option to bind to 127.0.0.1, instead (update: page offline by now). I can no longer add links to that post, but I can link to my demo Komodo IDE exploit script up here. Now it seems like the option to disable or even customize debugger settings was removed from the GUI: I cannot find it in version 9.3.2. I found a workaround when reading the source code that allows to still plug that hole in my setup. If I tweak the config file to an invalid port (outside of 0..65535 range), the debugger will just not start-up but Komodo starts up with no complaints. Nice :-)
# fgrep debuggerListenerPort ~/.komodoide/*/prefs.xml /home/user/.komodoide/9.3/prefs.xml: <long id="debuggerListenerPort">77777</long> /home/user/.komodoide/9.3/prefs.xml: <string id="debuggerListenerPortType">specific</string>
If you use that trick, be sure to check the version number in the path so you edit the latest / actually used version, 9.3 in my case.