![]() A web browser compares the Access-Control-Allow-Origin with the requesting website's origin and permits access to the response if they match. The Access-Control-Allow-Origin header is included in the response from one website to a request originating from another website, and identifies the permitted origin of the request. What is the Access-Control-Allow-Origin response header? Browsers permit access to responses to cross-origin requests based upon these header instructions. The cross-origin resource sharing specification provides controlled relaxation of the same-origin policy for HTTP requests to one website domain from another through the use of a collection of HTTP headers. In this section we explain what the Access-Control-Allow-Origin header is in respect of CORS, and how it forms part of CORS implementation. Java is a registered trademark of Oracle and/or its affiliates.CORS and the Access-Control-Allow-Origin response header For details, see the Google Developers Site Policies. If you host a website on a private network that needs requests from public networks, the Chrome team wants your feedback! File an issue at Chromium Issue Tracker (component: Blink>SecurityFeature>CORS>PrivateNetworkAccess).Įxcept as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. Users will have a site setting to override PNA for trusted sites. Full Enforcement: All PNA restrictions will be enforced (blocking non-compliant requests) tentatively in Chrome 130. ![]()
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