CVE-2024-47165: Gradio's CORS origin validation accepts the null origin

What kind of vulnerability is it? Who is impacted?

This vulnerability relates to CORS origin validation accepting a null origin. When a Gradio server is deployed locally, the localhost_aliases variable includes “null” as a valid origin. This allows attackers to make unauthorized requests from sandboxed iframes or other sources with a null origin, potentially leading to data theft, such as user authentication tokens or uploaded files. This impacts users running Gradio locally, especially those using basic authentication.