kb/data/developer.mozilla.org/en-US/docs/Glossary/Same-origin_policy-0.md

title	chunk	source	category	tags	date_saved	instance
Same-origin policy - Glossary | MDN	1/3	https://developer.mozilla.org/en-US/docs/Glossary/Same-origin_policy	reference	web, html, css, javascript, documentation	2026-05-05T05:44:28.820189+00:00	kb-cron

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1. Glossary
2. Same-origin policy

Same-origin policy

The same-origin policy is a critical security mechanism that restricts how a document or script loaded from one origin can interact with a resource from another origin. It helps isolate potentially malicious documents, reducing possible attack vectors.

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• See also

See also

• Same-origin policy
• Related glossary terms:
  • CORS
  • origin