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

{
  "id": "bc6d83fcc446c075956ae106f0b67c4b081a68b0195beae1f32475cdfc1015d3",
  "url": "https://osv.dev/vulnerability/CVE-2026-66257",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Apache Qpid Proton-J: 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-J: through 0.34.1. Users are recommended to upgrade to version 0.35.0, which fixes the issue.",
    "evidence": "osv:CVE-2026-66257",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-66257",
      "aliases": [
        "CVE-2026-66257"
      ],
      "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-j",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "743eecb20a8d7592d953147984c3e84b9d05b070"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:apache:qpid_proton-j:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.35.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "0.34.0",
            "0.33.10",
            "0.33.9",
            "0.33.8",
            "0.33.7",
            "0.33.6",
            "0.33.5",
            "0.33.4",
            "0.33.3",
            "0.33.2",
            "0.33.1",
            "0.33.0",
            "0.32.0",
            "0.31.0",
            "0.30.0",
            "0.29.0",
            "0.28.1",
            "0.28.0",
            "0.27.1",
            "0.27.0-rc2",
            "0.27.0",
            "0.27.0-rc1",
            "0.26.0",
            "0.25.0",
            "0.24.0",
            "0.23.0",
            "0.22.0",
            "0.21.0",
            "0.20.0",
            "0.19.0",
            "0.18.0",
            "0.17.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-66257.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:49.720828424Z",
      "provider": "osv",
      "references": [
        "https://repo.maven.apache.org/maven2",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/66xxx/CVE-2026-66257.json",
        "https://lists.apache.org/thread/dnczt6bgfcq2x6q8ljco177h1qmv59fm",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-66257"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-770"
        ],
        "cna_assigner": "apache",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "last_affected": "0.34.1"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/66xxx/CVE-2026-66257.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-66257",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 518148,
  "published_at": "2026-08-05T05:18:01.606+00:00"
}