CVE-2026-28414
Summary
Gradio apps running on Window with Python 3.13+ are vulnerable to an absolute path traversal issue that enables unauthenticated attackers to read arbitrary files from the file system.
Details
Python 3.13+ changed the definition of os.path.isabs so that root-relative paths like /windows/win.ini on Windows are no longer considered absolute paths, resulting in a vulnerability in Gradio's logic for joining paths safely.
This can be exploited by unauthenticated attackers to read arbitrary files from the Gradio server, even when Gradio is set up with authentication.
PoC
% curl http://10.10.10.10:7860/static//windows/win.ini
; for 16-bit app support
[fonts]
[extensions]
[mci extensions]
[files]
[Mail]
MAPI=1Impact
Arbitrary file read in the context of the Windows user running Gradio.
Package Versions Affected
Automatically patch vulnerabilities without upgrading
CVSS Version
Related Resources
References
https://github.com/gradio-app/gradio/security/advisories/GHSA-39mp-8hj3-5c49, https://nvd.nist.gov/vuln/detail/CVE-2026-28414, https://github.com/gradio-app/gradio/commit/6011b00d0154b85532fa901dd73cf8fa7d86fd04, https://github.com/gradio-app/gradio
Basic Information
