Denial of Service (DoS) by Sending Large Filename at File Upload Endpoint in gradio-app/gradio

{
  "id": "3ac184e3452689b39d2fe9fe48913d4f644440515d724ab3269e2df4bab8f8e3",
  "url": "https://osv.dev/vulnerability/CVE-2025-0187",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Denial of Service (DoS) by Sending Large Filename at File Upload Endpoint in gradio-app/gradio",
    "summary": "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.",
    "evidence": "osv:CVE-2025-0187",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2025-0187",
      "aliases": [
        "CVE-2025-0187"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/gradio-app/gradio",
              "type": "GIT",
              "events": [
                {
                  "introduced": "a381c35785b9705eb82aedce08041460b06b1e80"
                },
                {
                  "last_affected": "a381c35785b9705eb82aedce08041460b06b1e80"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:gradio_project:gradio:0.39.1:*:*:*:*:python:*:*",
                    "range": [
                      {
                        "introduced": "0.39.1"
                      },
                      {
                        "last_affected": "0.39.1"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "0.39.1",
            "website@0.39.1",
            "gradio@4.44.1",
            "@gradio/preview@0.11.2"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-0187.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:49.185093059Z",
      "provider": "osv",
      "references": [
        "https://huntr.com/bounties/77f3ed54-9e1c-4d9f-948f-ee6f82e2fe24",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/0xxx/CVE-2025-0187.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-0187"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-400"
        ],
        "cna_assigner": "@huntr_ai",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/0xxx/CVE-2025-0187.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-0187",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 517626,
  "published_at": "2025-03-20T10:10:42.759+00:00"
}