GHSA-89v2-pqfv-c5r9 Gradio's CORS origin validation accepts the null origin

• PyPI gradio: < 5.0.0 → fixed in 5.0.0

Impact 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. Patches Yes, please upgrade to `gradio>=5.0` to address this issue. Workarounds Is there a way for users to fix or remediate the vulnerability without upgrading? As a workaround, users can manually modify the `localhost_aliases` list in their local Gradio deployment to exclude "null" as a valid origin. By removing this value, the Gradio server will no longer accept requests from sandboxed iframes or sources with a null origin, mitigating the potential for exploitation.