CVE-2026-124495: Apache Storm: Logviewer follows worker symlinks across topology ACLs

Published Nov 11, 2026

Updated

When workers run as the topology owner, the Logviewer serves files that a worker has placed in its own log directory as links to other files. A user who is allowed to submit topologies can read the worker logs of other users' topologies, and other files the Logviewer process can read. Users are recommended to upgrade to version 3.2.0, which fixes the issue.

Affected Software

1 affected component

Apache storm

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade Apache Storm to a version that resolves this vulnerability.
Fixed in 3.2.0

Event History

Nov 11, 2026

CVE Published

via MITRE·12:34 PM

Data Sourced

via MITRE·12:34 PM

DescriptionWeakness

Data Sourced

via NVD·01:17 PM

DescriptionWeakness

Frequently Asked Questions

Who can exploit this issue?

A user who is allowed to submit topologies can exploit it. The issue enables that user to read worker logs belonging to other users' topologies and potentially other files readable by the Logviewer process.

What access does an attacker need before exploitation?

The attacker needs permission to submit a topology. Exploitation relies on a worker placing links in its own log directory that point to other readable files.

What should teams do to remediate the issue?

Upgrade Apache Storm to version 3.2.0, which fixes the issue.

CVE-2026-124495: Apache Storm: Logviewer follows worker symlinks across topology ACLs

Affected Software

Remediation

Event History

Frequently Asked Questions

Who can exploit this issue?

What access does an attacker need before exploitation?

What should teams do to remediate the issue?

Company

Resources

Contact

Frequently Asked Questions

Who can exploit this issue?

What access does an attacker need before exploitation?

What should teams do to remediate the issue?