HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023

{
  "id": "49b8c539217ab02221b77fa267a8dd143f1da2cde91599d9f14b8463c8bf401b",
  "url": "https://osv.dev/vulnerability/CLEANSTART-2025-MG51423",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023",
    "summary": "CVE-2023-44487 affects multiple packages. The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023. See references for individual vulnerability details.",
    "evidence": "osv:CLEANSTART-2025-MG51423",
    "products": [
      {
        "name": {
          "value": "dotnet6-build",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.0.123-r0",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "dotnet6-runtime",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.0.23-r0",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CLEANSTART-2025-MG51423",
      "aliases": [
        "CLEANSTART-2025-MG51423"
      ],
      "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": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "6.0.123-r0"
                }
              ]
            }
          ],
          "package": {
            "name": "dotnet6-build",
            "purl": "pkg:apk/cleanstart/dotnet6-build",
            "ecosystem": "CleanStart"
          },
          "database_specific": {
            "source": "https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2025/CLEANSTART-2025-MG51423.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "6.0.23-r0"
                }
              ]
            }
          ],
          "package": {
            "name": "dotnet6-runtime",
            "purl": "pkg:apk/cleanstart/dotnet6-runtime",
            "ecosystem": "CleanStart"
          },
          "database_specific": {
            "source": "https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2025/CLEANSTART-2025-MG51423.json"
          }
        }
      ],
      "modified": "2026-10-08T16:46:31.650788309Z",
      "provider": "osv",
      "upstream": [
        "CVE-2023-44487"
      ],
      "references": [
        "https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2025/CLEANSTART-2025-MG51423.json",
        "https://osv.dev/vulnerability/CVE-2023-44487",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-44487"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2023-44487",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 100617,
  "published_at": "2026-10-01T07:10:27.047+00:00"
}