Arbitrary Local File Read via Component Method Invocation in gradio-app/gradio

An issue was discovered in gradio-app/gradio, where the `/component_server` endpoint improperly allows the invocation of any method on a `Component` class with attacker-controlled arguments. Specifically, by exploiting the `move_resource_to_block_cache()` method of the `Block` class, an attacker can copy any file on the filesystem to a temporary directory and subsequently retrieve it. This vulnerability enables unauthorized local file read access, posing a significant risk especially when the application is exposed to the internet via `launch(share=True)`, thereby allowing remote attackers to read files on the host machine. Furthermore, gradio apps hosted on `huggingface.co` are also affected, potentially leading to the exposure of sensitive information such as API keys and credentials stored in environment variables.

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路径遍历：’..filename’

Gradio 安全漏洞

Gradio是一个开源 Python 库，是通过友好的 Web 界面演示机器学习模型的方法。 Gradio 存在安全漏洞，该漏洞源于端点不正确地允许调用类上的任何方法，允许未经授权的本地文件读取访问，可能导致敏感信息泄露。

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