The same origin policy is applicable only for browser side programming languages. So if you try to post to a different server than the origin server using JavaScript, then the same origin policy comes into play but if you post directly from the form i.e. the action points to a different server like: <form action=”http://someotherserver.com”> … Read more
If you’re coming to this answer directly from a search, make sure you have already added the csrf token to your form with {{ csrf_field() }} like the OP. If you have your session driver set to file: May have something to do with the storage_path not being writable. This is where it stores session … Read more
Before reading below make sure you have @csrf or {{ csrf_field() }} in your form like <form method=”post”> @csrf <!– {{ csrf_field() }} –> … rest of form … </form> The Session Expired or 419 Page Expired error message in Laravel comes up because somewhere your csrf token verification fails which means the App\Http\Middleware\VerifyCsrfToken::class middleware … Read more
We need to store the JWT on the client computer. If we store it in a LocalStorage/SessionStorage then it can be easily grabbed by an XSS attack. If we store it in cookies then a hacker can use it (without reading it) in a CSRF attack and impersonate the user and contact our API and … Read more
I use a simple js function like this AddAntiForgeryToken = function(data) { data.__RequestVerificationToken = $(‘#__AjaxAntiForgeryForm input[name=__RequestVerificationToken]’).val(); return data; }; Since every form on a page will have the same value for the token, just put something like this in your top-most master page <%– used for ajax in AddAntiForgeryToken() –%> <form id=”__AjaxAntiForgeryForm” action=”#” method=”post”><%= Html.AntiForgeryToken()%></form> … Read more
Note: Disabling CSRF is unsafe from security point of view. Please use your judgement to use the below method. Why this error is happening? This is happening because of the default SessionAuthentication scheme used by DRF. DRF’s SessionAuthentication uses Django’s session framework for authentication which requires CSRF to be checked. When you don’t define any … Read more
You have incorrectly specified the contentType to application/json. Here’s an example of how this might work. Controller: public class HomeController : Controller { public ActionResult Index() { return View(); } [HttpPost] [ValidateAntiForgeryToken] public ActionResult Index(string someValue) { return Json(new { someValue = someValue }); } } View: @using (Html.BeginForm(null, null, FormMethod.Post, new { id = … Read more
For security code, please don’t generate your tokens this way: $token = md5(uniqid(rand(), TRUE)); rand() is predictable uniqid() only adds up to 29 bits of entropy md5() doesn’t add entropy, it just mixes it deterministically Try this out: Generating a CSRF Token PHP 7 session_start(); if (empty($_SESSION[‘token’])) { $_SESSION[‘token’] = bin2hex(random_bytes(32)); } $token = $_SESSION[‘token’]; … Read more
You should do this: Make sure that you have <%= csrf_meta_tag %> in your layout Add beforeSend to all the ajax request to set the header like below: $.ajax({ url: ‘YOUR URL HERE’, type: ‘POST’, beforeSend: function(xhr) {xhr.setRequestHeader(‘X-CSRF-Token’, $(‘meta[name=”csrf-token”]’).attr(‘content’))}, data: ‘someData=” + someData, success: function(response) { $(“#someDiv’).html(response); } }); To send token in all requests … Read more
Cross-Site Request Forgery (CSRF) in simple words Assume you are currently logged into your online banking at www.mybank.com Assume a money transfer from mybank.com will result in a request of (conceptually) the form http://www.mybank.com/transfer?to=<SomeAccountnumber>;amount=<SomeAmount>. (Your account number is not needed, because it is implied by your login.) You visit www.cute-cat-pictures.org, not knowing that it is … Read more