![]() ![]() ![]() In these circumstances, you may run into problems with Cross-Origin Resource Sharing (CORS).įor security reasons, browsers restrict HTTP requests initiated from scripts if they cross over between domains (a cross-origin request). For example, your WordPress backend may live at wp. whilst the frontend of your application lives at. If you’re working with the WordPress REST API, sooner or later you’re likely to end up trying to load content between domains, particularly if you’re creating a headless CMS setup. If you’re experiencing errors when attempting to access WordPress REST API endpoints between domains due to CORS policies, this code snippet will help. Remember, changes in server configuration demand thorough testing to ensure no unintended side effects occur.WordPress REST API: ‘Access-Control-Allow-Origin’ header contains multiple values By carefully setting or unsetting the header and understanding your Apache server’s configuration hierarchy, you can effectively manage CORS issues and maintain a secure and functional web application environment. Resolving the “‘Access-Control-Allow-Origin’ header contains multiple values” error in Apache is primarily about streamlining your CORS policy configuration. Be specific about which domains should be allowed to access your resources. While setting Access-Control-Allow-Origin to * (allowing all domains) can resolve the error quickly, it’s not advisable for security reasons.
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