Open redirect in Gradio - CVE-2026-28415
Published: April 28, 2026
Vulnerability identifier: #VU128300
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-28415
CWE-ID: CWE-601
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Gradio
Affected software:
Gradio
Gradio
Detailed vulnerability description
The vulnerability allows a remote attacker to redirect users to an arbitrary external site.
The vulnerability exists due to url redirection to an untrusted site in the _redirect_to_target() function in Gradio's OAuth flow when handling a user-controlled _target_url query parameter. A remote attacker can send a specially crafted link to redirect users to an arbitrary external site.
User interaction is required, and the issue affects the /logout and /login/callback endpoints when OAuth is enabled.
How to mitigate CVE-2026-28415
Install security update from vendor's website.