Gradio Blocked Path ACL Bypass Vulnerability
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-285.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| gradio-app | gradio | before 5.6.0 | 5.6.0 | Patch available | CNA |
| — | gradio (PyPI) | before 5.11.0 | 5.11.0 | Patch available | GHSA-j2jg-fq62-7c3h |
- gradio Vendorgradio-app Affected before 5.6.0 Fixed in 5.6.0 Patch available CNA
- gradio (PyPI) Vendor— Affected before 5.11.0 Fixed in 5.11.0 Patch available GHSA-j2jg-fq62-7c3h
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:gradio_project:gradio:*:*:*:*:*:python:*:* | before 5.6.0 | Vulnerable | gradio-app |
- cpe:2.3:a:gradio_project:gradio:*:*:*:*:*:python:*:* Versions before 5.6.0 Vulnerable ·gradio-app
Remediation
- Fix · CNA gradio (gradio-app) Fixed in 5.6.0
- Fix · GHSA-j2jg-fq62-7c3h gradio (PyPI) Fixed in 5.11.0 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2025-23042
- 2026-10-03 Alias added: GHSA-j2jg-fq62-7c3h
References
More gradio-app Gradio vulnerabilities
- TI-2024-26222 Gradio v4.36.1 was discovered to contain a code injection vulnerability via the component… CVSS 3.1CRITICAL 9.8
- TI-2024-01607 Local File Inclusion in gradio-app/gradio CVSS 3.1HIGH 7.5
- TI-2024-00889 LFI in Gradio CVSS 3.1CRITICAL 9.4
- TI-2026-22690 Gradio has SSRF via Malicious `proxy_url` Injection in `gr.load()` Config Processing CVSS 3.1HIGH 8.6
- TI-2024-09866 Path Traversal in gradio-app/gradio CVSS 3.0HIGH 8.2
- TI-2024-01437 Command Injection in gradio-app/gradio via deploy+test-visual.yml workflow CVSS 3.1HIGH 8.2
Sources
- CVE-2025-23042 · CVE Program
- CVE-2025-23042 · NVD
- FIRST EPSS
- GHSA-j2jg-fq62-7c3h · GitHub Advisory Database · CC BY 4.0
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