CORS origin validation accepts the null origin in Gradio
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · 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 designed for quick prototyping. This vulnerability relates to **CORS origin validation accepting a null origin**. When a Gradio server is deployed locally, the `localhost_aliases` variable includes "null" as a valid origin. This allows attackers to make unauthorized requests from sandboxed iframes or other sources with a null origin, potentially leading to data theft, such as user authentication tokens or uploaded files. This impacts users running Gradio locally, especially those using basic authentication. Users are advised to upgrade to `gradio>=5.0` to address this issue. As a workaround, users can manually modify the `localhost_aliases` list in their local Gradio deployment to exclude "null" as a valid origin. By removing this value, the Gradio server will no longer accept requests from sandboxed iframes or sources with a null origin, mitigating the potential for exploitation.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- 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 5.0 | 5.0 | Patch available | CNA |
| — | gradio (PyPI) | before 5.0.0 | 5.0.0 | Patch available | GHSA-89v2-pqfv-c5r9 |
- gradio Vendorgradio-app Affected before 5.0 Fixed in 5.0 Patch available CNA
- gradio (PyPI) Vendor— Affected before 5.0.0 Fixed in 5.0.0 Patch available GHSA-89v2-pqfv-c5r9
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:gradio_project:gradio:*:*:*:*:*:python:*:* | before 5.0.0 | Vulnerable | gradio-app |
- cpe:2.3:a:gradio_project:gradio:*:*:*:*:*:python:*:* Versions before 5.0.0 Vulnerable ·gradio-app
Remediation
- Fix · CNA gradio (gradio-app) Fixed in 5.0
- Fix · GHSA-89v2-pqfv-c5r9 gradio (PyPI) Fixed in 5.0.0 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2024-47165
- 2026-10-03 Alias added: GHSA-89v2-pqfv-c5r9
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-2025-16852 Gradio Blocked Path ACL Bypass Vulnerability CVSS 4.0HIGH 8.7
- 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
Sources
- CVE-2024-47165 · CVE Program
- CVE-2024-47165 · NVD
- FIRST EPSS
- GHSA-89v2-pqfv-c5r9 · GitHub Advisory Database · CC BY 4.0
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