CVSS 3.1
4.7 mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:NCVE-2026-28415
Medium (4.7) in gradio project gradio. EPSS 0.3% chance of exploitation in the next 30 days. Fixed in gradio 6.6.0.
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.
Severity
- EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 21% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-601, CWE-200, CWE-284, CWE-330
- Published
- Modified
- Record from
- the NVD, synced
Affected
- gradio_project:gradio
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-pfjf-5gxr-995x | PyPI | gradio | <6.6.0 | 6.6.0 |
| PYSEC-2026-65 | PyPI | gradio | <6.6.0 | 6.6.0 |