CVE-2026-123291: Medium severity vulnerability

Published Nov 6, 2026

Updated

In JetBrains Datalore before 2026.4 improper owner validation allowed reading another workspace's issues and runs notebook

Event History

Nov 6, 2026

CVE Published

via MITRE·10:27 AM

Data Sourced

via MITRE·10:27 AM

DescriptionSeverityWeakness

Frequently Asked Questions

Who can exploit this issue?

An attacker needs network access and low-privileged access to Datalore. No user interaction is required.

What information could be exposed?

The issue could allow reading issues and notebook runs belonging to another workspace. The stated impact is limited to confidentiality; integrity and availability are not affected.

Which deployments are affected?

JetBrains Datalore versions before 2026.4 are affected. The available information does not state whether any particular default configuration changes exposure.

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Contact

SecAlerts Pty Ltd.
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Fortitude Valley,
QLD 4006, Australia
info@secalerts.co

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