Absolute Path Traversal in Gradio - CVE-2026-28414
Published: April 28, 2026
Vulnerability identifier: #VU128298
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-28414
CWE-ID: CWE-36
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 disclose sensitive information.
The vulnerability exists due to absolute path traversal in Gradio's static file handling when processing crafted root-relative path requests on Windows with Python 3.13+. A remote attacker can send a specially crafted request to disclose sensitive information.
The issue affects Gradio apps running on Windows with Python 3.13+ and can expose arbitrary files readable by the Windows user running Gradio, even when Gradio is configured with authentication.
How to mitigate CVE-2026-28414
Install security update from vendor's website.