CVE-2026-82426Network attack vectorHinoki check available

Authenticated file read via unvalidated topology jar path

Published Sep 14, 2026 · Updated Sep 14, 2026

Arbitrary file read in Apache Storm Nimbus 3.0.0 allows remote authenticated users to read files available to the Nimbus daemon. The submitTopology and submitTopologyWithOpts RPCs open uploadedJarLocation as a server-side path without verifying that beginFileUpload created it inside the Nimbus inbox. Any authenticated principal with submission rights can copy daemon-readable files into a downloadable topology blob, including keytabs, TLS private keys, and stored ZooKeeper credentials.

CVSS severityUnavailable
Unscored
EPSS probability0.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Arbitrary file read in Apache Storm Nimbus 3.0.0 allows remote authenticated users to read files available to the Nimbus daemon. The submitTopology and submitTopologyWithOpts RPCs open uploadedJarLocation as a server-side path without verifying that beginFileUpload created it inside the Nimbus inbox. Any authenticated principal with submission rights can copy daemon-readable files into a downloadable topology blob, including keytabs, TLS private keys, and stored ZooKeeper credentials.

The record

CVE
CVE-2026-82426
Published
Sep 14, 2026
Updated
Sep 14, 2026
Vendor
Apache Software Foundation
Product
Apache Storm
Classifications
T1005
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?

Apache Software Foundation · Apache Stormversion=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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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

T1005Data from Local System

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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