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High

Gradio Vulnerable to Denial of Service (DoS) via Crafted HTTP Request

  • Disclosed: 20.03.2025
  • Updated: 11.10.2026 13:19

A Regular Expression Denial of Service (ReDoS) vulnerability exists in the gradio-app/gradio repository, affecting the gr.Datetime component. The affected version is git commit 98cbcae. The vulnerability arises from the use of a regular expression ^(?:\s*now\s*(?:-\s*(\d+)\s*([dmhs]))?)?\s*$ to process user input. In Python's default regex engine, this regular expression can take polynomial time to match certain crafted inputs. An attacker can exploit this by sending a crafted HTTP request, causing the gradio process to consume 100% CPU and potentially leading to a Denial of Service (DoS) condition on the server.

Affected software

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PlatformPackageVulnerable versionsFixed in
Python (PyPI) gradio >= 4.38.0, <= 5.0.0-beta.2 no fix

References

CVSS score 7.5/10
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE)
CWE-1333, CWE-400
Platform
Python (PyPI)
Package
gradio
Disclosed
20.03.2025
Updated
11.10.2026 13:19

Sources and licenses

OSV / GitHub Advisory Database - PYSEC-2026-1421 - PyPA Advisory Database; CC BY 4.0

OSV / GitHub Advisory Database - GHSA-rvgh-pr46-x7gg - CC BY 4.0

Vulnerability history: gradio

All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (51) in the archive
Total entries
51
First → latest
12.2021 07.2026
Without a fix
13
Exploited in attacks
0

Severity breakdown

  • Critical 5
  • High 19
  • Medium 22
  • Low 5

Disclosures per year

Severity:
  1. Gradio before 6.16.0 contain a path traversal vulnerability in the FileExplorer component's preprocess() method that allows unauthenticated attackers to escape the configured root directory by supplyi
    High CVE-2026-49119 < 6.16.0 6.16.0
  2. Gradio has SSRF via Malicious `proxy_url` Injection in `gr.load()` Config Processing
    High · 8.2 CVE-2026-28416 < 6.6.0 6.6.0
  3. Gradio is Vulnerable to Absolute Path Traversal on Windows with Python 3.13+
    High · 7.5 CVE-2026-28414 < 6.7.0 6.7.0
  4. Gradio DOS in multipart boundry while uploading the file
    High · 7.5 CVE-2024-8966 <= 5.22.0 no fix
  5. Gradio Vulnerable to Denial of Service (DoS) via Crafted HTTP Request this entry
    High · 7.5 CVE-2024-10624 >= 4.38.0, <= 5.0.0-beta.2 no fix
  6. Gradio Vulnerable to Arbitrary File Deletion
    High · 8.2 CVE-2024-10648 >= 4.0.0, <= 5.0.0b2 no fix
  7. Gradio Vulnerable to Denial of Service (DoS) via Crafted Zip Bomb
    High · 7.5 CVE-2024-10569 >= 4.0.0, <= 5.0.0b2 no fix
  8. Gradio Blocked Path ACL Bypass Vulnerability
    Critical CVE-2025-23042 < 5.11.0 5.11.0
  9. Gradio uses insecure communication between the FRP client and server
    High · 8.1 CVE-2024-47871 < 5.0.0 5.0.0
  10. Gradio has a race condition in update_root_in_config may redirect user traffic
    High · 7.0 CVE-2024-47870 < 5.0.0 5.0.0
  11. Gradio lacks integrity checking on the downloaded FRP client
    High · 7.5 CVE-2024-47867 < 5.0.0 5.0.0
  12. Gradios's CORS origin validation is not performed when the request has a cookie
    High · 8.8 CVE-2024-47084 < 4.44.0 4.44.0
  13. Gradio allows users to access arbitrary files
    High · 8.1 CVE-2024-1728 < 4.19.2 4.19.2
  14. Server-Side Request Forgery in gradio
    High · 8.6 CVE-2024-4325 <= 4.36.0 no fix
  15. A local file inclusion vulnerability exists in the JSON component of gradio-app/gradio version 4.25. The vulnerability arises from improper input validation in the `postprocess()` function within `gra
    High · 7.5 CVE-2024-4941 < 4.31.4 4.31.4
  16. A command injection vulnerability exists in the gradio-app/gradio repository, specifically within the 'test-functional.yml' workflow. The vulnerability arises due to improper neutralization of special
    Critical · 9.1 CVE-2024-4253 < 4.29.0 4.29.0
  17. Gradio before 4.20 allows credential leakage on Windows.
    High · 7.5 CVE-2024-34510 < 4.20.0 4.20.0
  18. gradio vulnerable to Path Traversal
    High · 7.5 CVE-2024-1561 < 4.13.0 4.13.0
  19. gradio Server-Side Request Forgery vulnerability
    High · 7.3 CVE-2024-2206 < 4.18.0 4.18.0
  20. A local file include could be remotely triggered in Gradio due to a vulnerable user-supplied JSON value in an API request.
    Critical · 9.4 CVE-2024-0964 not given by the source no fix
  21. Gradio makes the `/file` secure against file traversal and server-side request forgery attacks
    High · 8.6 CVE-2023-51449 < 4.11.0 4.11.0
  22. Gradio Exposure of Sensitive Information to an Unauthorized Actor vulnerability
    Critical · 9.6 CVE-2023-6572 < 4.14.0 4.14.0
  23. `gradio` is an open source framework for building interactive machine learning models and demos. Prior to version 2.8.11, `gradio` suffers from Improper Neutralization of Formula Elements in a CSV Fil
    High · 8.8 CVE-2022-24770 < 2.8.11 2.8.11
  24. Files on the host computer can be accessed from the Gradio interface
    Critical · 8.3 CVE-2021-43831 < 2.5.0 2.5.0

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