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CVE-2026-84501 Apache ZooKeeper: Operational log forgery via newline injection in EnsembleAuthenticationProvider

🗓️ 16 Sep 2026 09:28:10Reported by apacheType 
cvelist
 cvelist
🔗 www.cve.org👁 36 Views

Unauthenticated log forgery in Apache ZooKeeper 3.8.0-3.8.6, 3.9.0-3.9.5 via ensemble auth.

Related
Affected
Refs
[
  {
    "vendor": "Apache Software Foundation",
    "product": "Apache ZooKeeper",
    "collectionURL": "https://repo.maven.apache.org/maven2",
    "packageName": "org.apache.zookeeper:zookeeper",
    "packageURL": "pkg:maven/org.apache.zookeeper/zookeeper",
    "versions": [
      {
        "status": "affected",
        "version": "3.9.0",
        "lessThanOrEqual": "3.9.5",
        "versionType": "maven"
      },
      {
        "status": "affected",
        "version": "3.8.0",
        "lessThanOrEqual": "3.8.6",
        "versionType": "maven"
      }
    ],
    "defaultStatus": "unaffected"
  }
]

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