CVE-2026-66257

{
  "id": "CVE-2026-66257",
  "sourceIdentifier": "[email protected]",
  "published": "2026-08-05T06:16:38.423",
  "lastModified": "2026-10-24T16:10:00.153",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A pre-authentication attacker could leverage unbounded symbol value caching to cause resource exhaustion leading to denial of service.\n\nThis issue affects Apache Qpid Proton-J: through 0.34.1.\n\nUsers are recommended to upgrade to version 0.35.0, which fixes the issue."
    },
    {
      "lang": "es",
      "value": "Un atacante de pre-autenticación podría aprovechar el almacenamiento en caché de valores de símbolos ilimitados para causar el agotamiento de recursos, lo que lleva a una denegación de servicio.\n\nEste problema afecta a Apache Qpid Proton-J: hasta la versión 0.34.1.\n\nSe recomienda a los usuarios actualizar a la versión 0.35.0, que corrige el problema."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Apache Software Foundation",
          "product": "Apache Qpid Proton-J",
          "defaultStatus": "unaffected",
          "collectionURL": "https://repo.maven.apache.org/maven2",
          "packageName": "org.apache.qpid:proton-j",
          "versions": [
            {
              "version": "0",
              "lessThanOrEqual": "0.34.1",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-08-06T13:13:16.783067Z",
          "id": "CVE-2026-66257",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-770"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:apache:qpid_proton-j:*:*:*:*:*:*:*:*",
              "versionEndExcluding": "0.35.0",
              "matchCriteriaId": "36AA0755-A42D-4FEC-99BC-607C0175A298"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://lists.apache.org/thread/dnczt6bgfcq2x6q8ljco177h1qmv59fm",
      "source": "[email protected]",
      "tags": [
        "Mailing List",
        "Vendor Advisory"
      ]
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2026/08/04/8",
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ]
    }
  ]
}