cve-2026-73921

{
  "cvss": 9.8,
  "datePublished": "2026-08-18T21:18:25.087",
  "dateUpdated": "2026-08-28T00:18:11.920",
  "description": "Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server).  Supported versions that are affected are 1.0.0-1.4.19. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon.  Successful attacks of this vulnerability can result in takeover of Helidon. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).",
  "id": "CVE-2026-73921",
  "raw": {
    "affected": [
      {
        "affectedData": [
          {
            "product": "Helidon",
            "vendor": "Oracle Corporation",
            "versions": [
              {
                "lessThanOrEqual": "1.4.19",
                "status": "affected",
                "version": "1.0.0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "source": "secalert_us@oracle.com"
      }
    ],
    "configurations": [
      {
        "nodes": [
          {
            "cpeMatch": [
              {
                "criteria": "cpe:2.3:a:oracle:helidon:1.4.20:*:*:*:*:*:*:*",
                "matchCriteriaId": "9AD0326A-6739-4D51-BD83-911D478B5898",
                "vulnerable": true
              }
            ],
            "negate": false,
            "operator": "OR"
          }
        ]
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server).  Supported versions that are affected are 1.0.0-1.4.19. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon.  Successful attacks of this vulnerability can result in takeover of Helidon. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)."
      }
    ],
    "id": "CVE-2026-73921",
    "lastModified": "2026-08-28T00:18:11.920",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 5.9,
          "source": "secalert_us@oracle.com",
          "type": "Secondary"
        }
      ],
      "ssvcV203": [
        {
          "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "ssvcData": {
            "id": "CVE-2026-73921",
            "options": [
              {
                "exploitation": "none"
              },
              {
                "automatable": "yes"
              },
              {
                "technicalImpact": "total"
              }
            ],
            "role": "CISA Coordinator",
            "timestamp": "2026-08-19T14:04:16.753538Z",
            "version": "2.0.3"
          }
        }
      ]
    },
    "published": "2026-08-18T21:18:25.087",
    "references": [
      {
        "source": "secalert_us@oracle.com",
        "tags": [
          "Vendor Advisory"
        ],
        "url": "https://www.oracle.com/security-alerts/cspuaug2026.html"
      }
    ],
    "sourceIdentifier": "secalert_us@oracle.com",
    "vulnStatus": "Modified",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-284"
          }
        ],
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ]
  },
  "severity": "CRITICAL",
  "source": "nvd",
  "title": "Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server)"
}