Security advisory

{
  "id": "4468e6f2257efa14cfbc3a93c7be0a3893eb744001d4599fc6fc17016828cef4",
  "url": "https://osv.dev/vulnerability/CVE-2026-73876",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-73876",
    "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. While the vulnerability is in Helidon, attacks may significantly impact additional products (scope change). 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. CVSS 3.1 Base Score 7.2 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N).",
    "evidence": "osv:CVE-2026-73876",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-73876",
      "aliases": [
        "CVE-2026-73876"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N"
        }
      ],
      "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-2026-73876.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:31.371222030Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73876.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-73876",
        "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-2026-73876.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-73876",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 498335,
  "published_at": "2026-08-18T21:03:55.811+00:00"
}