The admin_edit function in app/Controller/UsersController.php in MISP 2.4.82 mishandles the enable_password field, which allows admins to discover a hashed password by reading the audit log.
app/View/Helper/CommandHelper.php in MISP before 2.4.79 has persistent XSS via comments. It only impacts the users of the same instance because the comment field is not part of the MISP synchronisation.