Hi, During penetration-test contract, we came across CSRF in JSON-RPC based web application. Brief google search revealed some people saying that CSRF in JSON is hard to exploit, and that these vulnerabilities can be ignored. In fact, it's not that hard to exploit... Here is how we exploited it - little trick about CSRF attacks on JSON-RPC based web applications. Maybe it'll be useful to someone. http://blog.defensecode.com/2012/09/cross-site-request-forgery-against.html Regards -- DefenseCode Team ThunderScan - Audit your Web Application Source Code For Vulnerabilities http://www.defensecode.com/subcategory/thunderscan-8