CVE-2026-82428Network attack vectorHinoki check available

Cross-tenant code execution via predictable blob keys

Published Sep 14, 2026 · Updated Sep 14, 2026

Cross-tenant code execution in Apache Storm Client 3.0.0 allows remote authenticated users to substitute dependency jars. The artifact uploader derives a cluster-wide blob key only from each Maven coordinate and silently reuses an existing key without checking its bytes or owner. Exploitation requires multiple blob-creating principals and the --artifacts feature; a first uploader controls code later loaded into another tenant's topology.

CVSS severityUnavailable
Unscored
EPSS probability0.69%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Cross-tenant code execution in Apache Storm Client 3.0.0 allows remote authenticated users to substitute dependency jars. The artifact uploader derives a cluster-wide blob key only from each Maven coordinate and silently reuses an existing key without checking its bytes or owner. Exploitation requires multiple blob-creating principals and the --artifacts feature; a first uploader controls code later loaded into another tenant's topology.

The record

CVE
CVE-2026-82428
Published
Sep 14, 2026
Updated
Sep 14, 2026
Vendor
The Apache Software Foundation
Product
Apache Storm Client
Classifications
T1195.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.0.0 <3.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

The Apache Software Foundation · Apache Storm Clientversion=3.0.0 <3.1.0

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1195.001Compromise Software Dependencies and Development Tools

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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