CVE-2021-43831 json
Files on the host computer can be accessed from the Gradio interface
published 2021-12-15 4 y ago modified 2026-07-08 4 mo ago also GHSA-rhq2-3vr9-6mcr , PYSEC-2021-873 , EUVD-2021-0095
- cvss
- 7.7
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 3.9%
- EPSS 3.9% chance of exploitation in 30 days, percentile 90%
- public exploits
- 0
- none known, plus a Nuclei check
Summary
Gradio is an open source framework for building interactive machine learning models and demos. In versions prior to 2.5.0 there is a vulnerability that affects anyone who creates and publicly shares Gradio interfaces. File paths are not restricted and users who receive a Gradio link can access any files on the host computer if they know the file names or file paths. This is limited only by the host operating system. Paths are opened in read only mode. The problem has been patched in gradio 2.5.0.
Patch / fix
Exploit prediction
3.85% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- Nuclei template Gradio < 2.5.0 - Arbitrary File Read nuclei detection template
- github.com https://github.com/gradio-app/gradio/security/advisories/GHSA-rhq2-3vr9-6mcr referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.7 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N |
| NVD | 3.1 | 7.7 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N |
| NVD | 2.0 | 3.5 | AV:N/AC:M/Au:S/C:P/I:N/A:N |
| GitHub | 3.1 | 8.3 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | gradio | <2.5.0 |
2.5.0 |
Affected products
- gradio-app gradio
Classification
- Weakness
-
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory
References
-
github.com
/gradio-app/gradio/commit/41bd3645bdb616e1248b2167ca83636a2653f781
web, patch, third-party-advisory
-
github.com
/gradio-app/gradio/security/advisories/GHSA-rhq2-3vr9-6mcr
web, exploit, third-party-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2021-43831
advisory
-
github.com
/gradio-app/gradio
package
-
github.com
/pypa/advisory-database/tree/main/vulns/gradio/PYSEC-2021-873.yaml
web
Sources
- CVE List CVE-2021-43831
- GitHub Advisory GHSA-rhq2-3vr9-6mcr
- NVD CVE-2021-43831
- OSV PYSEC-2021-873
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.