---
id: CVE-2026-82428
title: >-
  Description


  Dependency artifacts uploaded with `storm jar --artifacts` were stored under a
  blob key derived only from

  the Maven coordinate, for example `dep---.jar`
summary: >-
  Description


  Dependency artifacts uploaded with `storm jar --artifacts` were stored under a
  blob key derived only from

  the Maven coordinate, for example `dep---.jar`. The key was therefore
  identical

  for every user of the cluster and pred…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-22
vendor: Apache Software Foundation
product: 'org.apache.storm:storm-client'
affected:
  - 'org.apache.storm:storm-client >= 3.0.0 < 3.1.0'
published: '2026-09-14'
updated: '2026-09-14'
sourceUpdated: '2026-09-14T20:58:48.430'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-82428'
references:
  - url: 'https://lists.apache.org/thread/pj3fspp4l10fgk2jkvrnqsmxycmjv622'
    label: security@apache.org
  - url: 'http://www.openwall.com/lists/oss-security/2026/09/13/8'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-14T19:58:03.203886Z'
ingestedAt: '2026-09-14T15:23:07.424Z'
epss: 0.00693
epssPercentile: 0.50859
---

## Overview

Description

Dependency artifacts uploaded with `storm jar --artifacts` were stored under a blob key derived only from
the Maven coordinate, for example `dep---.jar`. The key was therefore identical
for every user of the cluster and predictable in advance. When the blob already existed, the uploader
caught `KeyAlreadyExistsException` and silently reused it, with no check that the existing blob's content
or owner matched the artifact the submitter had resolved.

A user who uploaded a blob under such a key first therefore controlled the bytes that every later submitter
of the same coordinate would receive on the worker classpath, resulting in code execution inside another
tenant's topology.

This affects deployments where more than one principal may create blobs and where the `--artifacts`
dependency feature is used.

Mitigation

Upgrade to 3.1.0, where each uploaded artifact receives a key carrying a freshly generated UUID and a
pre-existing blob is no longer silently reused.

Note that the corrected key generation is on the SUBMITTING CLIENT, so upgrading the cluster alone does not
close this; every client that runs `storm jar --artifacts` must also be upgraded. Operators should audit
existing `dep-` blobs for unexpected owners before upgrading. Users who cannot upgrade immediately should
avoid the `--artifacts` mechanism in multi-tenant clusters and distribute dependencies inside the topology
jar instead.

Credit

The ASF -- found using Claude agents to study the security of open-source projects, validated and reported by Apache Storm.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.