Same-Origin Policy

E856188

The Same-Origin Policy is a fundamental web security mechanism that restricts how documents or scripts loaded from one origin can interact with resources from another, helping prevent malicious cross-site attacks.

All labels observed (1)

Label Occurrences
Same-Origin Policy canonical 1

How this entity was disambiguated

Statements (50)

Predicate Object
instanceOf access control policy ⓘ
browser security policy ⓘ
web security mechanism ⓘ
aimsToPrevent cross-site request forgery ⓘ
cross-site scripting ⓘ
data exfiltration between sites ⓘ
session hijacking via cross-origin access ⓘ
appliesTo DOM access ⓘ
Fetch API ⓘ
IndexedDB ⓘ
WebSockets ⓘ
linked to: WebSockets Standard

XMLHttpRequest ⓘ
client-side scripts ⓘ
cookies ⓘ
localStorage ⓘ
sessionStorage ⓘ
web browsers ⓘ
defines rules for cross-origin access ⓘ
definesOriginBy host ⓘ
port ⓘ
scheme ⓘ
enforcedBy DOM implementation ⓘ
JavaScript engine ⓘ
browser networking layer ⓘ
hasComponent origin ⓘ
hasExceptionMechanism CORS ⓘ
linked to: CORS protocol

JSONP (legacy) ⓘ
postMessage ⓘ
hasSecurityGoal isolation between web origins ⓘ
protection of user data across sites ⓘ
introducedBy Netscape Navigator ⓘ
introducedIn 1990s ⓘ
relatedTo Content Security Policy ⓘ
Cross-Origin Resource Sharing ⓘ
linked to: CORS protocol

document.domain relaxation ⓘ
postMessage API ⓘ
sandboxed iframes ⓘ
restricts cross-origin DOM access ⓘ
cross-origin network requests ⓘ
cross-origin reads ⓘ
cross-origin writes ⓘ
treatsAsCrossOrigin documents with different host ⓘ
documents with different port ⓘ
documents with different scheme ⓘ
treatsAsSameOrigin documents with same scheme host and port ⓘ
usedBy Google Chrome ⓘ
Microsoft Edge ⓘ
Mozilla Firefox ⓘ
Opera ⓘ
Safari ⓘ

How these facts were elicited

Referenced by (1)

Full triples — surface form annotated when it differs from this entity's canonical label.

CORS processing model → isRelatedTo → Same-Origin Policy ⓘ