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CVE-2026-50734 Apache ActiveMQ Client, Apache ActiveMQ, Apache ActiveMQ All: Pre-authentication OpenWire memory-allocation DoS during wire format negotiation

🗓️ 30 Jun 2026 09:53:03Reported by apacheType 
cvelist
 cvelist
🔗 www.cve.org👁 42 Views

Unauthenticated attacker can trigger broker DoS during OpenWire negotiation with an oversized size value.

Related
Affected
Refs
[
  {
    "collectionURL": "https://repo.maven.apache.org/maven2",
    "defaultStatus": "unaffected",
    "packageName": "org.apache.activemq:activemq-client",
    "product": "Apache ActiveMQ Client",
    "vendor": "Apache Software Foundation",
    "versions": [
      {
        "lessThan": "5.19.8",
        "status": "affected",
        "version": "0",
        "versionType": "semver"
      },
      {
        "lessThan": "6.2.7",
        "status": "affected",
        "version": "6.0.0",
        "versionType": "semver"
      }
    ]
  },
  {
    "defaultStatus": "unaffected",
    "packageName": "org.apache.activemq:apache-activemq",
    "product": "Apache ActiveMQ",
    "vendor": "Apache Software Foundation",
    "versions": [
      {
        "lessThan": "5.19.8",
        "status": "affected",
        "version": "0",
        "versionType": "semver"
      },
      {
        "lessThan": "6.2.7",
        "status": "affected",
        "version": "6.0.0",
        "versionType": "semver"
      }
    ]
  },
  {
    "defaultStatus": "unaffected",
    "packageName": "org.apache.activemq:activemq-all",
    "product": "Apache ActiveMQ All",
    "vendor": "Apache Software Foundation",
    "versions": [
      {
        "lessThan": "5.19.8",
        "status": "affected",
        "version": "0",
        "versionType": "semver"
      },
      {
        "lessThan": "6.2.7",
        "status": "affected",
        "version": "6.0.0",
        "versionType": "semver"
      }
    ]
  }
]

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