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Web Development vocabulary · Web Security

CORS

Meaning in web development, with examples

abbreviationCommon term

In web development, CORS means: Cross-Origin Resource Sharing: browser rules that let a server say which other websites (origins) may read its responses through JavaScript.

In Turkish: CORS, kökenler arası kaynak paylaşımı

How it is used

Pronounced as one word, 'cors'. The famous 'blocked by CORS policy' error appears when a front end calls an API on another domain that doesn't send the right Access-Control-Allow-Origin header. It is fixed on the server, not in the browser.

Example sentences

  1. The API works in Postman but fails in the browser with a CORS error.

  2. Ask the back-end team to allow our domain in the CORS settings.

Common collocations

  • CORS error
  • CORS policy
  • enable CORS
  • CORS headers
  • cross-origin request
  • headerA name and value pair sent with an HTTP request or response that carries extra information, such as Content-Type, Authorization or Cache-Control.
  • APIApplication Programming Interface: a defined way for one piece of software to ask another for data or actions, for example a web API that returns JSON.
  • browserA program such as Chrome, Firefox, Safari or Edge that downloads web pages and turns their code into the screens people read and use.
  • CSRFCross-Site Request Forgery: an attack that tricks a logged-in user's browser into sending an unwanted request, such as changing an email address, to a site the user trusts.

This word in other fields

The same English word can have a different meaning in another field:

More terms: Web Security

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