CVE-2025-23042
📋 TL;DR
This vulnerability allows attackers to bypass Gradio's file access controls by changing the letter case of blocked file paths on case-insensitive file systems. It affects Gradio users on Windows and macOS who haven't updated to version 5.6.0, potentially exposing sensitive files that should be protected by ACL restrictions.
💻 Affected Systems
- gradio
📦 What is this software?
Gradio by Gradio Project
⚠️ Risk & Real-World Impact
Worst Case
Attackers gain unauthorized access to sensitive files containing credentials, configuration data, or proprietary machine learning models, leading to data breaches and system compromise.
Likely Case
Unauthorized access to files within Gradio's accessible directories, potentially exposing application data, logs, or configuration files.
If Mitigated
Limited impact with proper network segmentation and minimal sensitive files in accessible directories.
🎯 Exploit Status
Requires knowledge of blocked file paths and ability to modify URL/file path case. No authentication bypass - only bypasses file path restrictions.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 5.6.0
Vendor Advisory: https://github.com/gradio-app/gradio/security/advisories/GHSA-j2jg-fq62-7c3h
Restart Required: No
Instructions:
1. Update Gradio using pip: 'pip install --upgrade gradio==5.6.0' 2. Verify the update with 'pip show gradio' 3. Restart any running Gradio applications
🔧 Temporary Workarounds
No workarounds available
allThe vendor advisory states there are no known workarounds for this vulnerability.
🧯 If You Can't Patch
- Migrate to Linux with case-sensitive file systems where the vulnerability does not apply
- Implement strict network access controls to limit exposure of Gradio applications
🔍 How to Verify
Check if Vulnerable:
Check Gradio version with 'pip show gradio | grep Version'. If version is below 5.6.0 and running on Windows/macOS, system is vulnerable.Check Version:
pip show gradio | grep VersionVerify Fix Applied:
Confirm version is 5.6.0 or higher with 'pip show gradio | grep Version' and test file access with case variations.📡 Detection & Monitoring
Log Indicators:
- Multiple failed file access attempts with case variations
- Access to files outside expected directories
Network Indicators:
- HTTP requests with unusual case patterns in file paths
- Access to blocked file extensions with case variations
SIEM Query:
source="gradio" AND (path:* OR file:* OR access:* AND (case OR uppercase OR lowercase OR variation))