The most voted comment is from patio11 about it being a very bad idea. A lot of discussion and hand-waving happened before finally CRSF was even mentioned. Once the author implemented a CSRF fix, the conversation seemed to quiet down. So is this kind of web-based access on the road to being safe and usable now? Many popular VPS hosts offer out-of-band access through web-based consoles such as Anyterm and Ajaxterm. Are those acceptable simply because they've taken care of the CSRF, XSS common issues? They allow arbitrary code on the remote boxes so how are they different from a security concern? I have no idea so I just threw out SSL even though it probably makes no bit of difference. I simply don't have the background or experience to know. Is it time to be concerned about how proficient the hosts are in securing their hypervisors and bridged networking for guests? If they do pose a concern, then why is there not more brouhaha about it to get some attention on the matter? Linode and Slicehost have a lot of customers...
To just say it is a bad idea and move on and not mention other implementations seems to leave a bad taste. Someone also asked about Werkzeug(of the Python demesne) as well...
There is some buzz about doing cloud to cloud attacks but I haven't heard anything that's been realized yet. I have also heard that there are issues with data staying resident on local disks on EC2 after machine termination, but I don't know if that's the case.