CVE-2026-28415 — Gradio has Open Redirect in OAuth Flow

Description (CNA)

Gradio is an open-source Python package designed for quick prototyping. Prior to version 6.6.0, the _redirect_to_target() function in Gradio's OAuth flow accepts an unvalidated _target_url query parameter, allowing redirection to arbitrary external URLs. This affects the /logout and /login/callback endpoints on Gradio apps with OAuth enabled (i.e. apps running on Hugging Face Spaces with gr.LoginButton). Starting in version 6.6.0, the _target_url parameter is sanitized to only use the path, query, and fragment, stripping any scheme or host.

Affected (CNA)

Vendor / product	Versions
gradio-app / gradio	affected < 6.6.0

CWE

CWE-200, CWE-284, CWE-330, CWE-601

References

https://github.com/gradio-app/gradio/security/advisories/GHSA-pfjf-5gxr-995x

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.