Apache Qpid Proton Dotnet: Unbounded symbol value caching can lead to pre-authentication resource exhaustion

{
  "id": "90a6465c0115dcc922e5fd9b09ae862c86668c814b05a61011336ea6c0fc8ff9",
  "url": "https://osv.dev/vulnerability/CVE-2026-67465",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Apache Qpid Proton Dotnet: Unbounded symbol value caching can lead to pre-authentication resource exhaustion",
    "summary": "A pre-authentication attacker could leverage unbounded symbol value caching to cause resource exhaustion leading to denial of service. This issue affects Apache Qpid Proton-Dotnet: through 1.0.0. Users are recommended to upgrade to version 1.1.0, which fixes the issue.",
    "evidence": "osv:CVE-2026-67465",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-67465",
      "aliases": [
        "CVE-2026-67465"
      ],
      "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/apache/qpid-proton-dotnet",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "57cecabed730eb60b706e204fac7aacd7f101fad"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:apache:qpid_proton-dotnet:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.1.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.0.0",
            "1.0.0-M11",
            "1.0.0-M10",
            "1.0.0-M9",
            "1.0.0-M8",
            "1.0.0-M7",
            "1.0.0-M6",
            "1.0.0-M5",
            "1.0.0-M4",
            "1.0.0-M3",
            "1.0.0-M2",
            "1.0.0-M1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-67465.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:32.441568337Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67465.json",
        "https://lists.apache.org/thread/zl2pj5fo32lbyrwof89tdyrgt67bbo0m",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-67465"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-770"
        ],
        "cna_assigner": "apache",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "last_affected": "1.0.0"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67465.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-67465",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 499674,
  "published_at": "2026-08-05T05:21:04.115+00:00"
}