---
title: "CVE-2026-82441: Apache Storm - Broken Access Control"
description: "Apache Storm before 3.1.0 contains a broken access control vulnerability caused by lack of validation on blobstore dependency keys in topology submissions, letting attackers delete blobs of other topologies or cause leadership loss, exploit requires submitting crafted topology with malicious keys."
url: https://panop.io/threat-heartbeat/CVE-2026-82441/
---

# CVE-2026-82441 Apache Storm - Broken Access Control

Apache Storm before 3.1.0 contains a broken access control vulnerability caused by lack of validation on blobstore dependency keys in topology submissions, letting attackers delete blobs of other topologies or cause leadership loss, exploit requires submitting crafted topology with malicious keys.

CVSS base score 9.1 /10

Critical

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.27% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-82441)

## Details

Type

Broken Access Control

Impact

Denial Of Service, Data Tampering

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Published

14 September 2026

Updated

15 October 2026

Weakness

[CWE-20](https://cwe.mitre.org/data/definitions/20.html)

## Vendor fix

Upgrade to Apache Storm version 3.1.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-82441](https://nvd.nist.gov/vuln/detail/CVE-2026-82441)
- [https://lists.apache.org/thread/qzh245bczoxw4mfnyvrj3dj2crtzdso8](https://lists.apache.org/thread/qzh245bczoxw4mfnyvrj3dj2crtzdso8)
- [http://www.openwall.com/lists/oss-security/2026/09/13/19](http://www.openwall.com/lists/oss-security/2026/09/13/19)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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