Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Client, Apache ActiveMQ Broker: Unbounded memory allocation in OpenWire property unmarshalling

{
  "id": "afd4c2c3afb14540c74a3092a4a04c33183a61f4072627228c6189fe617febce",
  "url": "https://osv.dev/vulnerability/CVE-2026-53917",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Client, Apache ActiveMQ Broker: Unbounded memory allocation in OpenWire property unmarshalling",
    "summary": "Memory Allocation with Excessive Size Value vulnerability in Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Client, Apache ActiveMQ Broker. An authenticated user can cause a broker DoS by sending a crafted OpenWire Message with a large encoded size value for the map. OpenWire message property maps are unmarshaled without size validation which can trigger OOM and crash the broker. This issue affects Apache ActiveMQ: before 5.19.8, from 6.0.0 before 6.2.7; Apache ActiveMQ All: before 5.19.8, from 6.0.0 before 6.2.7; Apache ActiveMQ Client: before 5.19.8, from 6.0.0 before 6.2.7; Apache ActiveMQ Broker: before 5.19.8, from 6.0.0 before 6.2.7. Users are recommended to upgrade to version 6.2.7 or 5.19.8, which fixes the issue.",
    "evidence": "osv:CVE-2026-53917",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-53917",
      "aliases": [
        "BIT-activemq-2026-53917",
        "CVE-2026-53917"
      ],
      "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/activemq",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "7d56ebc8e04dd0a2a14545cfa05883f9bdba72a2"
                },
                {
                  "introduced": "14bac13f40958c1a1d3d198051eed32facc4abd1"
                },
                {
                  "fixed": "f3e61919b374ee5b124f80458334c314fc2cb29d"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:apache:activemq:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "5.19.8"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:apache:activemq:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "6.0.0"
                      },
                      {
                        "fixed": "6.2.7"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "activemq-6.2.1",
            "activemq-5.19.2",
            "activemq-6.2.0",
            "activemq-5.19.1",
            "activemq-5.19.0",
            "activemq-5.18.6",
            "activemq-5.18.5",
            "activemq-6.1.2",
            "activemq-5.18.4",
            "activemq-6.1.1",
            "activemq-6.1.0",
            "activemq-6.0.0",
            "activemq-5.18.3",
            "activemq-5.18.2",
            "activemq-5.18.1",
            "activemq-5.18.0",
            "activemq-5.16.0",
            "activemq-5.15.0",
            "activemq-5.14.0",
            "activemq-5.13.0",
            "activemq-5.12.0",
            "activemq-5.11.0",
            "activemq-5.10.0",
            "activemq-5.9.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53917.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:50.170222149Z",
      "provider": "osv",
      "references": [
        "https://repo.maven.apache.org/maven2",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53917.json",
        "https://lists.apache.org/thread/grrd1mwgkgblqjbwkkq6dvmdxd9ov2dx",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-53917"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-789"
        ],
        "cna_assigner": "apache",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "5.19.8"
                  },
                  {
                    "introduced": "6.0.0"
                  },
                  {
                    "fixed": "6.2.7"
                  },
                  {
                    "fixed": "5.19.8"
                  },
                  {
                    "introduced": "6.0.0"
                  },
                  {
                    "fixed": "6.2.7"
                  },
                  {
                    "fixed": "5.19.8"
                  },
                  {
                    "introduced": "6.0.0"
                  },
                  {
                    "fixed": "6.2.7"
                  },
                  {
                    "fixed": "5.19.8"
                  },
                  {
                    "introduced": "6.0.0"
                  },
                  {
                    "fixed": "6.2.7"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53917.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-53917",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 518619,
  "published_at": "2026-06-30T09:49:17.388+00:00"
}