CVE-2026-28415

Affects: Hugging Face

CVSS: MEDIUM · 4.3 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Published: 2026-02-27
Weakness: CWE-200, CWE-284, CWE-330, CWE-601, CWE-601
Source: nvd.nist.gov/vuln/detail/CVE-2026-28415

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.

References

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

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