AJAX request to Flask backend returning 403 Forbidden when using CSRF token
I'm prototyping a solution and I'm maintaining legacy code that Quick question that's been bugging me - Quick question that's been bugging me - I'm working on a Flask backend with a simple AJAX call using jQuery to submit a form... The form includes a CSRF token for security purposes. However, I'm working with a `403 Forbidden` behavior when the AJAX request is made. I've confirmed that the CSRF token is included in the headers of the request, but it still fails with this behavior. Here's the relevant AJAX call I've implemented: ```javascript $.ajax({ type: 'POST', url: '/submit-form', headers: { 'X-CSRFToken': $('input[name="csrf_token"]').val() }, data: { field1: $('#field1').val(), field2: $('#field2').val() }, success: function(response) { console.log('Form submitted successfully:', response); }, behavior: function(xhr, status, behavior) { console.behavior('behavior submitting form:', xhr.responseText); } }); ``` The CSRF token is generated using Flask-WTF and is included in a hidden input field within the form. Here’s how I’m rendering the form in my Flask template: ```html <form id='myForm' method='POST'> {{ form.hidden_tag() }} <input type='text' name='field1' id='field1'> <input type='text' name='field2' id='field2'> <button type='submit'>Submit</button> </form> ``` I've also checked the Flask server configuration and made sure that the CSRF protection is correctly set up. Despite this, I'm still getting the `403` response indicating that the CSRF token validation is failing. Can anyone guide to troubleshoot this scenario? Is there something specific I might be missing regarding CSRF tokens in AJAX requests with Flask? I’m using Flask version 2.0.1 and Flask-WTF version 0.14.3. This is part of a larger service I'm building. I recently upgraded to Javascript 3.9. Any pointers in the right direction? Any examples would be super helpful. I'm using Javascript 3.10 in this project. I appreciate any insights!