Cross Site Scripting (XSS)

friendsofsymfony/rest-bundle is vulnerable to Cross Site Scripting XSS. The vulnerability is due to incorrect jsonp validation due to sanitizing the callback query param name rather than its value, which allows potentially malicious callback values to be processed, leading to Cross Site Scriping...

GHSA-P9FG-J6WW-953M FOSRestBundle issue with broken validation of JSONP callbacks

Starting with FOSRestBundle 1.2 we switched to using willdurand/jsonp-callback-validator for validation of JSONP callbacks. However the change was implemented incorrectly validating the callback query param name, rather than its value. Anyone using the JSONP handler which is off by default togeth...