Allow CORS: Access-Control-Allow-Origin
Easily add (Access-Control-Allow-Origin: *) rule to the response header.
Firefox Addon: Allow CORS: Access-Control-Allow-Origin
The 'Allow CORS: Access-Control-Allow-Origin' is a Firefox add-on designed to facilitate cross-domain Ajax requests in web applications. It works by adding (Access-Control-Allow-Origin: *) rule to the response header, a function typically blocked in modern browsers' JavaScript APIs. Upon installation, it remains inactive by default, which can be changed by simply clicking once on its toolbar icon.
Add-on stats
Manifest V3
By: Muyor
Weekly download count: 659
Firefox on Android: No
Permissions:
- storage
- webRequest
- declarativeNetRequest
Host permissions:
- <all_urls>
Size: 82.44K
Email: mu*****@gmail.com
URLs: Website
Full description: See detailed description
Ranking
# 677 ▼ 8
Other platforms
Not available on Android
User reviews
These summaries are automatically generated weekly using AI based on recent user reviews.
Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate,
spammy, or outdated. Pros
- Effectively addresses CORS issues and allows access to restricted resources
- Works as intended for certain web development tasks, particularly in React
- Enables website logins that would otherwise break without it
Cons
- Causes extremely high CPU usage leading to slow performance
- Issues with the whitelist functionality acting contrary to expectations
- Recent updates appear to have broken functionality for some users
Most mentioned
- High CPU usage
- Functionality issues with whitelist
- Works for CORS but at the cost of system performance
User reviews
Causes high CPU usage!
by Blaze_droid, 2025-03-07
Insane high cpu usage. Do not install or your pc will get bloated
by Tomer, 2025-02-24
by 退出党团队远离中共恶魔, 2025-02-09
Add-on safety
Risk impact
Allow CORS: Access-Control-Allow-Origin 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.
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Risk likelihood
We don't have sufficient data to confidently determine the risk likelihood of Allow CORS: Access-Control-Allow-Origin. Use it at your own risk.
Risk likelihood analysis details
- High This extension has low user count. Unpopular extensions may not be stable or safe.
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