Security advisory

{
  "id": "61adbd5463cea3403803041593e9da259416fd136cc257fd4e000d9d6a68b896",
  "url": "https://osv.dev/vulnerability/CVE-2020-13128",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-13128",
    "summary": "An issue was discovered in Manolo GWTUpload 1.0.3. server/UploadServlet.java (the servlet for handling file upload) accepts a delay parameter that causes a thread to sleep. It can be abused to cause all of a server's threads to sleep, leading to denial of service.",
    "evidence": "osv:CVE-2020-13128",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2020-13128",
      "aliases": [
        "CVE-2020-13128"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/manolo/gwtupload",
              "type": "GIT",
              "events": [
                {
                  "introduced": "6422caed2c0550c158a2ab3f9ad7839646e1d713"
                },
                {
                  "last_affected": "6422caed2c0550c158a2ab3f9ad7839646e1d713"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:gwtupload_project:gwtupload:1.0.3:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.0.3"
                      },
                      {
                        "last_affected": "1.0.3"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.0.3",
            "gwtupload-project-1.0.3"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-13128.json"
          }
        }
      ],
      "modified": "2026-10-20T10:51:38.665961985Z",
      "provider": "osv",
      "references": [
        "https://github.com/manolo/gwtupload/issues/33",
        "https://logicaltrust.net/blog/2020/02/gwt-upload.html"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-13128",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 382718,
  "published_at": "2020-05-18T00:15:11.547+00:00"
}