EUVD-2026-77486
GHSA-5978-3w53-3qhw
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Network-accessible with low privileges (topology submission); cross-tenant blob deletion and cluster-wide DoS constitute a scope change with high integrity and availability impact.
Primary rating from Vendor (CNA).
CVSS VectorVendor
Lifecycle Timeline
5Description PRE-NVD
AnalysisAI
Cross-tenant blob deletion and cluster-wide denial of service in Apache Storm Nimbus 3.0.0 allow authenticated topology submitters to arbitrarily delete blobstore keys owned by other tenants or permanently disable cluster leadership. Nimbus accepts dependency_jars and dependency_artifacts lists without validating their contents at submission time: during topology cleanup Nimbus deletes listed keys as itself (bypassing ACL checks), and on acquiring leadership Nimbus surrenders leadership for any topology whose dependency keys are absent - allowing a single malicious submission to loop all Nimbus daemons into perpetual leader-election, leaving the cluster inoperable. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The cluster DoS path requires valid topology submission credentials on the target Apache Storm 3.0.0 cluster - any principal authorized to call the Nimbus `submitTopology` RPC. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Apache rates this vulnerability as moderate severity, which appears conservative relative to the actual impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade to Apache Storm 3.1.0, where Nimbus validates at submission time that every entry in `dependency_jars` and `dependency_artifacts` is a recognized dependency blob key that already exists in the blobstore, refusing non-conforming topologies outright. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all Storm Nimbus 3.0.0 deployments and audit users with topology submission credentials to assess exposure. …
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Same weakness CWE-20 – Improper Input Validation
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External POC / Exploit Code
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