---
id: CVE-2026-123290
title: >-
  In JetBrains Datalore before 2026.4 hidden notebook code was exposed to
  unauthenticated users via the public interactive report content endpoint
summary: >-
  In JetBrains Datalore before 2026.4 hidden notebook code was exposed to
  unauthenticated users via the public interactive report content endpoint
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-201
vendor: JetBrains
product: Datalore
affected:
  - Datalore < 2026.4
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-11-06T14:01:59.378507Z'
published: '2026-11-06'
updated: '2026-11-06'
sourceUpdated: '2026-11-06T14:43:37.540Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-123290'
references:
  - url: 'https://www.jetbrains.com/privacy-security/issues-fixed/'
tags:
  - cve.org
ingestedAt: '2026-11-06T10:49:35.372Z'
---

## Overview

In JetBrains Datalore before 2026.4 hidden notebook code was exposed to unauthenticated users via the public interactive report content endpoint

## Affected

- `Datalore < 2026.4`

## Remediation

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