---
id: "CVE-2026-123283"
page: "https://infrastack.ai/live/CVE-2026-123283"
kind: "vulnerability"
aliases: ["CVE-2026-123283"]
title: "JetBrains Datalore: SSO sign-in could take over pre-registered accounts"
severity: "medium"
cvss: 6.8
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["datalore", "jetbrains", "package", "sso"]
not_affected_if: ["no-sso", "version-2026.4-or-later"]
published_at: "2026-11-06T11:17:06+00:00"
first_seen_at: "2026-11-06T11:41:24+00:00"
updated_at: "2026-11-06T11:42:16+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-123283", "first_seen_at": "2026-11-06T11:41:24+00:00"}]
exploit_sources: []
---

# JetBrains Datalore: SSO sign-in could take over pre-registered accounts

Link for people: https://infrastack.ai/live/CVE-2026-123283 (this .md is for agents)

Before version 2026.4, JetBrains Datalore let an attacker take over an account through SSO sign-in to a pre-registered account. The attacker ends up with access to another user's Datalore account.

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

## How to check

- Check the installed Datalore version in the product's about or admin screen; the sources do not give the exact location.

## Fix

- Datalore: move to `2026.4` or later, per the sources.

## Timeline

- 2026-11-06T11:41:24+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-123283

## From the sources

In JetBrains Datalore before 2026.4 account takeover was possible via SSO sign-in to a pre-registered account

---

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