Is Allow CORS: Access-Control-Allow-Origin safe?

Clean risk

Allow CORS injects Access-Control-Allow-Origin headers into all HTTP responses, disabling the browser's Same-Origin Policy while active.

When switched on, the extension uses declarativeNetRequest session rules to add an Access-Control-Allow-Origin: * header to every HTTP response, allowing any web page to read cross-origin responses that the browser would otherwise block. An optional per-tab mode captures the actual requesting origin and injects a matching specific-origin header instead, which also permits credentialed cross-origin requests when the credentials option is enabled. This affects all URLs and all resource types until the extension is turned off.

Muyorv0.2.3Chrome Web Store
2Risk
Who publishes it

Muyor - 17 other listings from the same operator, none carrying a finding

What this publisher told the store about itself, and the other listings that told it the same thing.

AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.

Publishers can request a review.

What it can do

Permissions this extension asks for, as declared in version 0.2.3. Asking for a permission is not a finding on its own - it is what the extension can do if it chooses to.

  • Read and change your data on every site you visit

    <all_urls>

  • Store data in your browser

    storage

  • Watch every request your browser makes

    webRequest

  • Block and redirect the requests your browser makes

    declarativeNetRequest

Updated 30 September 2026lhobafahddgcelffkeicbaginigeejlf