In app/Controller/TagsController.php in MISP 2.4.118, users can bypass intended restrictions on tagging data.
An issue was discovered in MISP before 2.4.158. In UsersController.php, password confirmation can be bypassed via vectors involving an "Accept: application/json" header.
An issue was discovered in MISP before 2.4.132. It can perform an unwanted action because of a POST operation on a form that is not linked to the login page.