CVE-2026-28415

MediumCVSS 4.7/10Last modified Jun 17, 2026

Description

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.

Metrics

CVSS 3.1 4.7/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N

Weakness enumeration

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

Affected software

No affected versions have been published.

Timeline

Published: Feb 27, 2026
Last modified: Jun 17, 2026
NVD status: Analyzed

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