Is CORS Unblock safe?

Clean risk

CORS Unblock lets the enabled page read cross-origin XHR responses by rewriting CORS and security headers.

When you open its popup and click Start, CORS Unblock adds tab-scoped network rules for that tab. Those rules can set Access-Control-Allow-Origin, Access-Control-Allow-Methods, and Access-Control-Allow-Credentials headers, expose response headers, and remove X-Frame-Options or Content-Security-Policy headers until terminated.

balvin.perriev0.5.2Chrome Web Store
0Risk
Who publishes it

balvin.perrie - 1 other listing 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.

Same store account

1 other listing published from this account, 60k+ users between them, none of them carrying a finding.

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 0.5.2. 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>

  • Store data in your browser

    storage

  • Block and redirect the requests your browser makes

    declarativeNetRequest

  • Attach to pages with the browser's debugger, which can read and rewrite anything on them

    debugger

Updated 30 September 2026lfhmikememgdcahcdlaciloancbhjino