![](https://addons.mozilla.org/user-media/addon_icons/2637/2637630-64.png?modified=a1f7c1bc)
CORSE
CORS Everywhere allows to anonymously fetch resources across origin
![](https://addons.mozilla.org/user-media/previews/thumbs/236/236455.jpg?modified=1622135626)
What is CORSE?
CORSE is a Firefox add-on called CORS Everywhere, which enables the anonymous retrieval of resources from different origins by setting the Access-Control-Allow-Origin header to * in all responses, except when the Access-Control-Allow-Credentials header is present.
Add-on stats
Users: 40
Creation date: 2020-04-22
Weekly download count: 2
Firefox on Android: Yes
Risk impact: High risk impact
Risk likelihood: Low risk likelihood
Manifest version: 2
Permissions:
- <all_urls>
- webRequest
- webRequestBlocking
Size: 10.65K
Ranking
Other platforms
Not available on Chrome
Not available on Edge
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Add-on summary
For all responses this extension sets Access-Control-Allow-Origin to * except if response contains Access-Control-Allow-Credentials header
Add-on safety
Risk impact
CORSE is risky to use as it requires a number of sensitive permissions that can potentially harm your browser and steal your data. Exercise caution when installing this add-on. Review carefully before installing. We recommend that you only install CORSE if you trust the publisher.
Risk likelihood
CORSE has earned a fairly good reputation and likely can be trusted.
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