The `is_in_or_equal` function may be bypassed in Gradio

Gradio is an open-source Python package designed for quick prototyping. This vulnerability relates to the **bypass of directory traversal checks** within the `is_in_or_equal` function. This function, intended to check if a file resides within a given directory, can be bypassed with certain payloads that manipulate file paths using `..` (parent directory) sequences. Attackers could potentially access restricted files if they are able to exploit this flaw, although the difficulty is high. This primarily impacts users relying on Gradio’s blocklist or directory access validation, particularly when handling file uploads. Users are advised to upgrade to `gradio>=5.0` to address this issue. As a workaround, users can manually sanitize and normalize file paths in their Gradio deployment before passing them to the `is_in_or_equal` function. Ensuring that all file paths are properly resolved and absolute can help mitigate the bypass vulnerabilities caused by the improper handling of `..` sequences or malformed paths.

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对路径名的限制不恰当(路径遍历)

Gradio 路径遍历漏洞

Gradio是Hugging Face开源的一个开源 Python 库，是通过友好的 Web 界面演示机器学习模型的方法。 Gradio存在路径遍历漏洞，该漏洞源于is_in_or_equal函数旨在检查文件是否位于给定目录中，可以使用某些使用`..`序列操纵文件路径来绕过该函数。

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