Security advisory

{
  "id": "161d5fb47dbdb80d63587cfeafc474febc0a78750d1687452286f1dcea5b0b46",
  "url": "https://osv.dev/vulnerability/CVE-2026-73936",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-73936",
    "summary": "Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 4.0.0-4.5.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Helidon. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).",
    "evidence": "osv:CVE-2026-73936",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-73936",
      "aliases": [
        "CVE-2026-73936"
      ],
      "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/helidon-io/helidon",
              "type": "GIT",
              "events": [
                {
                  "introduced": "529680f55caeac3f39162b8382dfdb3da189173d"
                },
                {
                  "last_affected": "529680f55caeac3f39162b8382dfdb3da189173d"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:oracle:helidon:4.5.1:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.5.1"
                      },
                      {
                        "last_affected": "4.5.1"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "4.5.1",
            "4.5.1-M1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-73936.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:32.611282332Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73936.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-73936",
        "https://www.oracle.com/security-alerts/cspuaug2026.html"
      ],
      "provider_metadata": {
        "cna_assigner": "oracle",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "4.0.0"
                  },
                  {
                    "last_affected": "4.5.0"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73936.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-73936",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 499715,
  "published_at": "2026-08-18T21:04:14.972+00:00"
}