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CVE-2025-23042— Gradio Blocked Path ACL Bypass Vulnerability

Quick assessment

Affected
gradio-app gradio
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Gradio是Gradio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 5.6.0之前版本存在授权问题漏洞，该漏洞源于对文件的路径验证逻辑缺乏规范化。攻击者利用该漏洞可以通过更改被阻止的文件或目录路径的字母大小写，绕过Gradio的文件路径访问控制列表（ACL）。

AI Predicted 7.5 Difficulty: Easy EPSS 0.98% · P61

Possible ATT&CK Techniques 1 AI

T1083 · File and Directory Discovery
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I. Basic Information for CVE-2025-23042

Vulnerability Information
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Vulnerability Title
Gradio Blocked Path ACL Bypass Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Gradio is an open-source Python package that allows quick building of demos and web application for machine learning models, API, or any arbitrary Python function. Gradio's Access Control List (ACL) for file paths can be bypassed by altering the letter case of a blocked file or directory path. This vulnerability arises due to the lack of case normalization in the file path validation logic. On case-insensitive file systems, such as those used by Windows and macOS, this flaw enables attackers to circumvent security restrictions and access sensitive files that should be protected. This issue can lead to unauthorized data access, exposing sensitive information and undermining the integrity of Gradio's security model. Given Gradio's popularity for building web applications, particularly in machine learning and AI, this vulnerability may pose a substantial threat if exploited in production environments. This issue has been addressed in release version 5.6.0. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Gradio 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Gradio是Gradio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 5.6.0之前版本存在授权问题漏洞，该漏洞源于对文件的路径验证逻辑缺乏规范化。攻击者利用该漏洞可以通过更改被阻止的文件或目录路径的字母大小写，绕过Gradio的文件路径访问控制列表（ACL）。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
gradio-app gradio < 5.6.0 -

II. Public POCs for CVE-2025-23042

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III. Intelligence Information for CVE-2025-23042

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IV. Related Vulnerabilities

Same product: gradio
Same vendor: gradio-app
Same weakness: CWE-285

V. Comments for CVE-2025-23042

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