Security advisory

{
  "id": "5243b3d94ee2fa83107ec30f52073f17a19a78a4fe93033d37d7310559e1a7dd",
  "url": "https://osv.dev/vulnerability/CVE-2026-73918",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-73918",
    "summary": "Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 4.0.0-4.4.1. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Helidon accessible data as well as unauthorized read access to a subset of Helidon accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Helidon. CVSS 3.1 Base Score 7.3 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L).",
    "evidence": "osv:CVE-2026-73918",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-73918",
      "aliases": [
        "CVE-2026-73918"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/helidon-io/helidon",
              "type": "GIT",
              "events": [
                {
                  "introduced": "e63e3d63f875f9c1f4e34d92375107f0b34d9d5c"
                },
                {
                  "last_affected": "e63e3d63f875f9c1f4e34d92375107f0b34d9d5c"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:oracle:helidon:4.5.0:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.5.0"
                      },
                      {
                        "last_affected": "4.5.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "4.5.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-73918.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:31.244294012Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73918.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-73918",
        "https://www.oracle.com/security-alerts/cspuaug2026.html"
      ],
      "provider_metadata": {
        "cna_assigner": "oracle",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "4.0.0"
                  },
                  {
                    "last_affected": "4.4.1"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73918.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-73918",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 498272,
  "published_at": "2026-08-18T21:04:09.399+00:00"
}