Category Archives: CORS

Does changing an image src attribute to call a PHP function on my server to retrieve an image from another server eliminate CORS policy issues?

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I am working in React, and I have an image which has an src attribute of https://s3.amazonaws.com/sample_endpoint. My website domain is https://sample-website.com.

I am using a library, dom-to-image, https://www.npmjs.com/pa… Continue reading Does changing an image src attribute to call a PHP function on my server to retrieve an image from another server eliminate CORS policy issues?→

Exploitability of allowed wildcard (*) CORS Origins with Bearer Token Authorization

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I’m looking at the following setup. A web application uses a REST API to communicate with the server. All API responses include Origin: *. For authorization Authorization: Bearer <token> is used. Access-Control-Allow-He… Continue reading Exploitability of allowed wildcard (*) CORS Origins with Bearer Token Authorization→

How to authorize access to a resource when requested with CORS and validate the origin?

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I’ll try to make the explanation simple and to the point (keyword try). And if that’s not sufficient, then maybe I can expand on the question.

Imagine two sites: resources.example.com and www.example.com. I only have direct … Continue reading How to authorize access to a resource when requested with CORS and validate the origin?→