gradio-app gradio up to 6.6 on Windows /windows/win.ini absolute path traversal

Summaryinfo

A vulnerability, which was classified as problematic, has been found in gradio-app gradio up to 6.6 on Windows. Affected is an unknown function of the file /windows/win.ini. Performing a manipulation results in absolute path traversal. This vulnerability is reported as CVE-2026-28414. The attack is possible to be carried out remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in gradio-app gradio up to 6.6 on Windows. This affects an unknown functionality of the file /windows/win.ini. The manipulation with an unknown input leads to a absolute path traversal vulnerability. CWE is classifying the issue as CWE-36. The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize absolute path sequences such as "/abs/path" that can resolve to a location that is outside of that directory. This is going to have an impact on confidentiality. The summary by CVE is:

Gradio is an open-source Python package designed for quick prototyping. Prior to version 6.7, 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. 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. Version 6.7 fixes the issue.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-28414 since 02/27/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1006 for this issue.

By approaching the search of inurl:windows/win.ini it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 6.7 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-9082). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

• gradio-app

Name

• gradio

Version

• 6.0
• 6.1
• 6.2
• 6.3
• 6.4
• 6.5
• 6.6

Website

• Product: https://github.com/gradio-app/gradio/

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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