---
id: CVE-2026-123835
title: >-
  In JetBrains Datalore before 2026.4 code execution was possible in another
  user's computation via an init script upload race condition
summary: >-
  In JetBrains Datalore before 2026.4 code execution was possible in another
  user's computation via an init script upload race condition
severity: medium
cvss: 5.9
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N'
cvssSource: cna
cwe:
  - CWE-367
vendor: JetBrains
product: Datalore
affected:
  - Datalore < 2026.4
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-11-06T16:38:33.870689Z'
published: '2026-11-06'
updated: '2026-11-06'
sourceUpdated: '2026-11-06T16:49:24.371Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-123835'
references:
  - url: 'https://www.jetbrains.com/privacy-security/issues-fixed/'
tags:
  - cve.org
ingestedAt: '2026-11-06T16:57:43.116Z'
---

## Overview

In JetBrains Datalore before 2026.4 code execution was possible in another user's computation via an init script upload race condition

## Affected

- `Datalore < 2026.4`

## Remediation

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