CVE-2026-28415
Gradio has Open Redirect in OAuth Flow
CVSS Score
4.3
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-200 CWE-284 CWE-330 CWE-601 |
| Vendor | gradio-app |
| Product | gradio |
| Published | Feb 27, 2026 |
| Last Updated | Mar 2, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None
Affected Versions
gradio-app / gradio
< 6.6.0