CORS Unblock Firefox

CORS Unblock

By: rxliuli
Web apps cross-origin access with precise domain control and simple permissions.

Features & Capabilities

CORS Unblock is a powerful browser extension that enhances web applications by enabling controlled cross-origin requests. It provides native-like networking capabilities while maintaining security through explicit permission controls.

Key Features:

• Precise Domain Control

  • Grant specific websites permission to access external APIs
  • Manage permissions on a per-domain basis
  • Revoke access anytime through an intuitive interface

• Security-First Design

  • No user data collection
  • All operations performed locally in your browser
  • Explicit permission model for maximum security

• Developer-Friendly

  • Simple API integration
  • Programmatic permission requests
  • Seamless cross-origin requests once authorized

• Lightweight & Efficient

  • Minimal impact on browsing performance
  • Clean, intuitive user interface
  • Quick permission management

For Developers: CORS Unblock provides a straightforward API to request domain access permissions. Once user authorization is granted, your web application can make cross-origin requests without complex proxy servers or CORS configurations.

For Users: The extension works automatically in the background. When a web application needs cross-origin access, you'll receive a clear permission request. You maintain full control over which domains can communicate with each other.

Privacy & Security: We take your privacy seriously. CORS Unblock:

  • Collects no user data
  • Processes all operations locally
  • Requires explicit permission for each domain
  • Allows instant permission revocation

This extension is perfect for developers building modern web applications and users who want to safely enable cross-origin capabilities while maintaining control over their browsing security.

User Growth & Download Statistics

Manifest V3 Add-on
By:
rxliuli
Daily users:
89 -1
Rating:
5.00
(1)
Version:
0.3.1 Last updated: 2025-04-29
Version code:
5939286
Creation date:
2025-04-22
Risk:
High risk impact Moderate risk likelihood
Permissions:
Host permissions:
  • https://*/*
  • http://*/*
Content scripts matches:
  • <all_urls>
Size:
777.94KB
Email:
rx*****@gmail.com
URLs:
Website
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-07-06
Compare stats and ranking:

Other platforms

Chrome
CORS Unblock (v0.3.1)
757 5.00 (3)

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Developed by:
rxliuli
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/cors-unblock2/
Email:
rx*****@gmail.com
Website:
https://github.com/rxliuli/cors-unblock/issues

User Reviews

It works well, it helped to check a locally running website that sent various requests to external resources (GET, POST, OPTIONS). Thanks!
by Al*****, 2025-07-17
View all user reviews ›

Is CORS Unblock Safe?

Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

CORS Unblock requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details
  • Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
  • Critical ****** ****** ** *** ********* ****** * *********** ******** **** ** ** *** ******* *** ****** **** **** *** ******* *****
  • High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

CORS Unblock is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details
  • High This extension has low user count. Unpopular extensions may not be stable or safe.
  • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
  • Good **** ********* *** **** **** *******
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Best CORS Unblock Alternatives

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