Reference fetch can saturate the server bandwidth for 10 seconds in nextcloud server

{
  "id": "3f98ec888399c560eb3aa3a94af981c56bda9fcda390778093f9a67a7a931942",
  "url": "https://osv.dev/vulnerability/CVE-2023-28644",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Reference fetch can saturate the server bandwidth for 10 seconds in nextcloud server",
    "summary": "Nextcloud server is an open source home cloud implementation. In releases of the 25.0.x branch before 25.0.3 an inefficient fetch operation may impact server performances and/or can lead to a denial of service. This issue has been addressed and it is recommended that the Nextcloud Server is upgraded to 25.0.3. There are no known workarounds for this vulnerability.",
    "evidence": "osv:CVE-2023-28644",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2023-28644",
      "aliases": [
        "CVE-2023-28644",
        "GHSA-9wmj-gp8v-477j"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/nextcloud/server",
              "type": "GIT",
              "events": [
                {
                  "introduced": "20ea9a25353129b56d46951fe7d23939665ab2b2"
                },
                {
                  "fixed": "494a0c1073b460d4d2a5c03ff3567fc388b91e36"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "25.0.0"
                      },
                      {
                        "fixed": "25.0.3"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "cpe": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*",
                    "range": [
                      {
                        "introduced": "25.0.0"
                      },
                      {
                        "fixed": "25.0.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v25.0.3rc2",
            "v25.0.3rc1",
            "v25.0.2",
            "v25.0.2rc3",
            "v25.0.2rc2",
            "v25.0.2rc1",
            "v25.0.1",
            "v25.0.1rc1",
            "v25.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-28644.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:46.875550540Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/28xxx/CVE-2023-28644.json",
        "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-9wmj-gp8v-477j",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-28644",
        "https://github.com/nextcloud/server/pull/36016"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-400"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/28xxx/CVE-2023-28644.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-28644",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 515078,
  "published_at": "2023-03-30T18:36:27.38+00:00"
}