Apache Storm Nimbus, Apache Storm UI: Disclosure of Unredacted Merged Daemon Configuration via the Topology Page
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-200.
Summary
Description getTopologyPageInfo merged the Nimbus daemon configuration with the topology's own configuration and returned the result without redaction in the topology_conf field of TopologyPageInfo. The Storm UI copied that value verbatim into the configuration field of GET /api/v1/topology/{id} and of the corresponding metrics endpoint. Where the cluster is configured with them, the merged map includes storm.zookeeper.auth.payload, which Storm's own documentation directs operators to keep in storm-cluster-auth.yaml under permissions that deny access from workers, together with the keystore and truststore passwords for the Thrift, Netty and ZooKeeper TLS configuration, and any plugin key whose name denotes a secret. getTopologyPageInfo is a topology read-only operation. Under SimpleACLAuthorizer a principal listed in topology.readonly.users or topology.readonly.groups could therefore read daemon credentials that the dedicated cluster configuration API, getNimbusConf, redacts and that is gated on nimbus.users instead. The sibling operations that exist to serve configuration were masked; the topology page, which merges in strictly more daemon state, was not. Mitigation Upgrade to 3.1.0, where credential-bearing values are masked before any configuration is served over the Nimbus API. Users who cannot upgrade immediately should remove any principal that is not trusted with cluster credentials from topology.readonly.users, topology.readonly.groups, topology.users and topology.groups, and should rotate the ZooKeeper authentication payload and any TLS keystore or truststore passwords that were reachable through the topology page. Credit Wanxin Yin (yaklang.io) reported this issue to the Apache Security Team.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA Apache Storm Nimbus (Apache Software Foundation) Fixed in 3.1.0
- Fix · CNA Apache Storm UI (Apache Software Foundation) Fixed in 3.1.0
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Apache Storm Nimbus 3.1.0
7 records Highest priority Priority MEDIUM 2 MEDIUM, 5 LOW
Other records, highest priority first
- TI-2026-56842 Apache Storm Nimbus: Cross-Tenant Blob Deletion and Cluster Denial of Service via Unvalidated Topology Dependency KeysPriority MEDIUM 47
- TI-2026-56837 Apache Storm Nimbus, Apache Storm Client: Disclosure of the Topology ZooKeeper Credential to Read-Only Users and to LogsPriority MEDIUM 43
- TI-2026-56835 Apache Storm Nimbus: Blobstore Authorization Bypass via Rebalance Configuration OverridesPriority LOW 37
- Release ·
Apache Storm UI 3.1.0
2 records Highest priority Priority LOW 2 LOW
Other records, highest priority first
- TI-2026-56836 Apache Storm Nimbus, Apache Storm UI: Disclosure of Unredacted Daemon Configuration via Nimbus and the UIPriority LOW 29
Timeline
- 2026-10-02 Threatist record created from CVE-2026-84179
- 2026-10-03 Alias added: GHSA-gp9q-jh3g-h72p
References
More Apache vulnerabilities
- TI-2025-18529 Apache Tomcat: Potential RCE and/or information disclosure and/or information corruption with partial PUT KEVCVSS 3.1CRITICAL 10.0
- TI-2024-30292 Apache OFBiz: Confused controller-view authorization logic (forced browsing) KEVCVSS 3.1CRITICAL 9.8
- TI-2024-26062 Apache OFBiz: Unauthenticated endpoint could allow execution of screen rendering code KEVCVSS 3.1CRITICAL 9.8
- TI-2024-21190 Apache OFBiz: Path traversal leading to RCE KEVCVSS 3.1CRITICAL 9.8
- TI-2024-18186 Apache HugeGraph-Server: Command execution in gremlin KEVCVSS 3.1CRITICAL 9.8
- TI-2023-25106 Deserialization of untrusted data in Apache ActiveMQ KEVCVSS 3.1CRITICAL 10.0
Sources
- CVE-2026-84179 · CVE Program
- CVE-2026-84179 · NVD
- FIRST EPSS
- GHSA-gp9q-jh3g-h72p · GitHub Advisory Database · CC BY 4.0
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