---
id: "CVE-2026-123288"
page: "https://infrastack.ai/live/CVE-2026-123288"
kind: "vulnerability"
aliases: ["CVE-2026-123288"]
title: "JetBrains Datalore: stored XSS in notebook charts via Vega editor link"
severity: "medium"
cvss: 5.4
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["datalore", "jetbrains", "notebooks", "other"]
not_affected_if: ["datalore-2026.4-or-later"]
published_at: "2026-11-06T11:17:07+00:00"
first_seen_at: "2026-11-06T11:41:24+00:00"
updated_at: "2026-11-06T11:42:32+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-123288", "first_seen_at": "2026-11-06T11:41:24+00:00"}]
exploit_sources: []
---

# JetBrains Datalore: stored XSS in notebook charts via Vega editor link

Link for people: https://infrastack.ai/live/CVE-2026-123288 (this .md is for agents)

JetBrains Datalore before 2026.4 let stored cross-site scripting occur through notebook charts opened from a Vega editor link. An attacker who can place such content in a notebook could run script in another user's browser session.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed Datalore version against the fixed version in the sources (`2026.4`)

## Fix

- Datalore: move to `2026.4` or later (per the affected range 'before 2026.4')

## Timeline

- 2026-11-06T11:41:24+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-123288

## From the sources

In JetBrains Datalore before 2026.4 stored XSS in notebook charts was possible via Vega editor link

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_