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CVE-2026-82434

Estado: AplazadaCrítica (10)—

Description

When ZooKeeper authentication is configured, Storm deliberately retains `storm.zookeeper.topology.auth.payload` in the topology configuration, because workers need it. Nimbus then served that configuration verbatim to any caller holding read-only topology permissions, so a user whose only grant was the ability to view a topology received its ZooKeeper credential.

That credential is not read-only. The cluster state implementation uses write-capable ACLs for worker heartbeats, backpressure and error state, so a recipient can forge or remove that state for the topology concerned. It is not a write credential on assignments.

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The same advisory covers the submission client, which logged the generated payload at INFO on every submission that generated one, and the SASL handlers, which logged it at DEBUG. The credential therefore also reached any log aggregation or support bundle collected from the cluster.

Mitigation

Upgrade to 3.1.0, where the payload is removed from the configuration served to read-only callers and is no longer written to logs.

Users who cannot upgrade immediately should rotate `storm.zookeeper.topology.auth.payload` for existing topologies, review retained logs and support bundles for the value, and restrict read-only topology permissions to trusted principals.

Credit

The ASF -- found using Claude agents to study the security of open-source projects, validated and reported by Apache Storm.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Acceso de red sin autenticación (AV:N PR:N UI:N) a configuración sensible en Nimbus; credencial ZooKeeper expuesta a usuarios con permisos de lectura permite falsificar estado del clúster.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Vulnerability ScanningUser TrainingRestrict File and Directory PermissionsPrivileged Account ManagementPassword PoliciesNetwork Segmentation

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Apache — StormAI

CWE

Referencias

JSON original (NVD)

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  "descriptions": [
    {
      "lang": "en",
      "value": "Description\n\nWhen ZooKeeper authentication is configured, Storm deliberately retains\n`storm.zookeeper.topology.auth.payload` in the topology configuration, because workers need it. Nimbus then\nserved that configuration verbatim to any caller holding read-only topology permissions, so a user whose\nonly grant was the ability to view a topology received its ZooKeeper credential.\n\nThat credential is not read-only. The cluster state implementation uses write-capable ACLs for worker\nheartbeats, backpressure and error state, so a recipient can forge or remove that state for the topology\nconcerned. It is not a write credential on assignments.\n\nThe same advisory covers the submission client, which logged the generated payload at INFO on every\nsubmission that generated one, and the SASL handlers, which logged it at DEBUG. The credential therefore\nalso reached any log aggregation or support bundle collected from the cluster.\n\nMitigation\n\nUpgrade to 3.1.0, where the payload is removed from the configuration served to read-only callers and is no\nlonger written to logs.\n\nUsers who cannot upgrade immediately should rotate `storm.zookeeper.topology.auth.payload` for existing\ntopologies, review retained logs and support bundles for the value, and restrict read-only topology\npermissions to trusted principals.\n\nCredit\n\nThe ASF -- found using Claude agents to study the security of open-source projects, validated and reported by Apache Storm."
    }
  ],
  "lastModified": "2026-09-14T20:58:48.430",
  "sourceIdentifier": "security@apache.org"
}