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Re: CVE-2026-82434: Apache Storm Nimbus, Apache Storm Client: Disclosure of the Topology ZooKeeper Credential to Read-Only Users and to Logs

Follow-up on oss-security asks why CVE-2026-82434, Apache Storm ZooKeeper credential disclosure to read-only users and logs, lacks a severity rating.

Gabriel Ravier replied to the oss-security disclosure thread for CVE-2026-82434, which affects Apache Storm Nimbus and Apache Storm Client. The vulnerability involves disclosure of the topology ZooKeeper credential to read-only users and to logs. The reply questions whether the CVE was filed without a severity rating or if it is simply missing from the listing. No exploitation details or affected versions are provided in the post.

oss-security · 3d agoVulnerability 2 sourcesCVE-2026-82434

CVE-2026-82441: Apache Storm Nimbus: Cross-Tenant Blob Deletion and Cluster Denial of Service via Unvalidated Topology Dependency Keys

Unvalidated topology dependency keys in Apache Storm Nimbus 3.0.0 enable cross-tenant blob deletion and cluster denial of service.

CVE-2026-82441 (severity: moderate) affects Apache Storm Nimbus (storm-server) versions 3.0.0 before 3.1.0. Topology submissions carry dependency_jars and dependency_artifacts blobstore key lists that Nimbus never validated on the submission path, yet acted on during cleanup of finished topologies. A malicious submitter could reference arbitrary blobstore keys, causing cross-tenant blob deletion and cluster-wide denial of service.

oss-security · 3d agoVulnerabilityCVE-2026-824411

CVE-2026-82437: Apache Storm Logviewer: Log Access Controls Not Enforced by Logviewer

Apache Storm Logviewer ignores logs.users and logs.groups ACLs for daemon logs, letting unauthorized users read sensitive logs.

CVE-2026-82437 (severity: moderate) affects Apache Storm Logviewer (storm-webapp) versions 3.0.0 before 3.1.0. The Logviewer offers logs.users and logs.groups settings for operators to control who may read log content, but for daemon logs the access decision combined the "this is a daemon log" flag with the authorizer result in a way that discarded the authorizer's answer. As a result, configured access controls were not enforced and unauthorized users could read daemon log content.

oss-security · 3d agoVulnerabilityCVE-2026-82437