Request header field Authorization is not allowed by Access-Control-Allow-Headers in preflight

im not what i did but i have been having error with my front end app communicating with JIRA via REST API. i need to create issues via my app and send a  POST request. but i am really having errors with CORS. i have asked our server techs to add the response headers the webxml as instructed here.

 

https://community.atlassian.com/t5/Answers-Developer-Questions/Cross-Origin-Resource-Sharing-with-JIRA-REST-API-and-Javascript/qaq-p/484801

 

and other resources. but they didnt work my jira dev environment is not accessible everytime i update my webxml. i walways get error 404. so we had to refresh the changes. 

 

anyway when i ran the code, i didnt get the usual CORS issue error i have but i had this error in chrome:

 

XMLHttpRequest cannot load https://jira-dev.....org/rest/api/2/issue/. Request header field Authorization is not allowed by Access-Control-Allow-Headers in preflight response.

here is my code:

 

return $.ajax({
url: 'https://jira-dev.cambridge.org/rest/api/2/issue/',
type: "POST",
data: parameters,
contentType: 'application/json',
//contentType: 'application/x-www-form-urlencoded; charset=UTF-8',
dataType: 'JSON',
async: false,
processData: false,
crossDomain: true,
xhrFields: {
withCredentials: true
},
beforeSend: function (xhr) {
xhr.setRequestHeader('Authorization', 'basic: '+make_base_auth(username, password));

},
error: function (errmsg) {
//console.log('error ocured:' + errmsg.statusText);
return errmsg;
},
success: function (text) {
//console.log(text);
return text;
},

 

1 answer

This is related to the messed up CORS implementation by atlassian. If you make something else as a GET request, e.g. (POST, PUT, DELETE) the browser performs a pre-flight request. This is a HEAD request checking if the requested resource allows for the method and specific headers. Unfortunately on a lot of Atlassians products these headers are not set properly. We addressed this by wring a add-on containing a servlet filter for all desired resources that handles pre-flight requests and allows the proper headers.

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