Is Cross Domain - CORS safe?

Clean risk

Cross Domain - CORS rewrites response headers so non-credentialed cross-origin reads are broadly allowed.

When its CORS bypass is enabled, Cross Domain - CORS modifies response headers for matching network responses across all URLs except YouTube and Googlevideo. It sets permissive Access-Control headers, including a wildcard origin and exposed headers, which allows web pages to read non-credentialed cross-origin responses that browsers would normally block.

Mai Tanv0.2.2Firefox Add-ons
3Risk

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 0.2.2. 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>

  • Act on the current tab, but only after you click the extension

    activeTab

  • Store data in your browser

    storage

  • Watch every request your browser makes

    webRequest

  • Watch, block and rewrite every request your browser makes

    webRequestBlocking

Updated 30 September 2026amo-681497