Cozy version 2 has XSS allowing remote attackers to obtain administrative access via JavaScript code in the url parameter to the /api/proxy URI, as demonstrated by an XMLHttpRequest call with an 'email:"[email protected]"' request, which can be followed by a password reset.
http://www.lynxsecurity.io/releases/XSS%20to%20Account%20Takeover%20in%20Cozy%20Cloud.pdf