couchdb -- user privilege escalation

Cory Sabol reports:

A malicious user with permission to create documents in a
database is able to attach a HTML attachment to a document.
If a CouchDB admin opens that attachment in a browser, e.g.
via the CouchDB admin interface Fauxton, any JavaScript code
embedded in that HTML attachment will be executed within the
security context of that admin. A similar route is available
with the already deprecated _show and _list functionality.