Definition dom based xss or as it is called in some texts type 0 xss is an xss attack wherein the attack payload is executed as a result of modifying the dom environment in the victim s browser used by the original client side script so that the client side code runs in an unexpected manner.
Server side filters do not matter. Dom based cross site scripting dom xss is a particular type of a cross site scripting vulnerability. Dom xss stands for document object model based cross site scripting.
The dom xs is just 32 square meters that s about 344 square feet allowing it to by pass the majority of paper work. A dom based xss attack is possible if the web application writes data to the document object model without proper sanitization. Dom xss vulnerability is a real threat various research and studies identified that up to 50 of websites are vulnerable to dom based xss vulnerability.