CVE-2026-28415

MEDIUM

4.3

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.

CVE Details

CVSS v3.1 Score4.3

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionREQUIRED

Published2/27/2026

Last Modified3/5/2026

Sourcenvd

Honeypot Sightings0

Affected Products

gradio_project:gradio

Weaknesses (CWE)

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

References

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

IOC Correlations

No correlations recorded

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