# CORSE

> CORS Everywhere allows to anonymously fetch resources across origin

Canonical page: [https://chrome-stats.com/d/corseverywhere](https://chrome-stats.com/d/corseverywhere)

## Overview

- **ID:** `corseverywhere`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Roman Shafigullin
- **Category:** web-development,other
- **Daily users:** 35
- **Weekly downloads:** 4
- **Version:** 1.1
- **Last updated:** 2020-04-22
- **First published:** 2020-04-22
- **Size:** 10 KB
- **Data as of:** 2026-09-08
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/corseverywhere/)

## Description

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.

## Rankings

- #19,072 — Overall
- #91 — course
- #216 — resource

## Permissions and access

### Permissions

- `<all_urls>`
- `webRequest`
- `webRequestBlocking`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

## Similar extensions and apps

- [CORS dev tool](https://chrome-stats.com/d/cors-dev-tool) — 13 users, 3.67 / 5
- [CORS Everywhere with referer support](https://chrome-stats.com/d/cors-everywhere-referer) — 1 users
- [CORS Unblock](https://chrome-stats.com/d/cors-unblock) — 6,345 users, 3.74 / 5
- [Corser](https://chrome-stats.com/d/corser) — 31 users, 3.00 / 5
- [CORS Everywhere](https://chrome-stats.com/d/cors-everywhere) — 20,823 users, 4.13 / 5
- [Corsify](https://chrome-stats.com/d/corsify) — 1 users, 3.00 / 5
- [CORS Unbound](https://chrome-stats.com/d/cors-unbound) — 20 users
- [Moesif Origin & CORS Changer](https://chrome-stats.com/d/moesif-origin-cors-changer1) — 491 users, 3.00 / 5
- [Allow CORS: Access-Control-Allow-Origin](https://chrome-stats.com/d/access-control-allow-origin) — 8,761 users, 2.68 / 5
- [CORS Policy Header Viewer](https://chrome-stats.com/d/cors-policy-header-viewer) — 1 users
- [CORS Unblock](https://chrome-stats.com/d/cors-unblock2) — 89 users, 5.00 / 5
- [CORS for Me](https://chrome-stats.com/d/cors-for-me) — 39 users

---

Source: [Chrome-Stats](https://chrome-stats.com/d/corseverywhere)