Bug 2443449 (CVE-2026-28415)

Summary: CVE-2026-28415 Gradio: Gradio: Open Redirect vulnerability allows redirection to arbitrary external URLs.
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: jwong, omaciel, teagle, ttakamiy
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Gradio, an open-source Python package. The _redirect_to_target() function in Gradio's OAuth flow accepts an unvalidated _target_url query parameter. A remote attacker can exploit this vulnerability by crafting a malicious URL, leading to an open redirect. This allows the attacker to redirect users to arbitrary external websites, potentially enabling phishing attacks or other forms of user manipulation.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-02-27 22:01:51 UTC
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.