---
id: CVE-2026-123291
title: >-
  In JetBrains Datalore before 2026.4 improper owner validation allowed reading
  another workspace's issues and runs notebook
summary: >-
  In JetBrains Datalore before 2026.4 improper owner validation allowed reading
  another workspace's issues and runs notebook
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-639
vendor: JetBrains
product: Datalore
affected:
  - Datalore < 2026.4
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-06T14:02:08.472665Z'
published: '2026-11-06'
updated: '2026-11-06'
sourceUpdated: '2026-11-06T14:43:21.685Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-123291'
references:
  - url: 'https://www.jetbrains.com/privacy-security/issues-fixed/'
tags:
  - cve.org
ingestedAt: '2026-11-06T10:49:35.369Z'
---

## Overview

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

## Affected

- `Datalore < 2026.4`

## Remediation

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