---
id: "CVE-2026-123282"
page: "https://infrastack.ai/live/CVE-2026-123282"
kind: "vulnerability"
aliases: ["CVE-2026-123282"]
title: "JetBrains Datalore: expired account tokens still open new sessions"
severity: "high"
cvss: 7.4
epss: null
exploited: false
status: "open"
category: "vendor"
products: []
ecosystems: []
tags: ["datalore", "jetbrains", "self-hosted", "vendor"]
not_affected_if: ["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: "2026-11-06T11:42:09+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-123282", "first_seen_at": "2026-11-06T11:41:24+00:00"}]
exploit_sources: []
---

# JetBrains Datalore: expired account tokens still open new sessions

Link for people: https://infrastack.ai/live/CVE-2026-123282 (this .md is for agents)

JetBrains Datalore before 2026.4 did not check whether account tokens had expired. An attacker holding an old token could start a new authenticated 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 release `2026.4`.

## Fix

- Datalore: move to `2026.4` or later.

## Timeline

- 2026-11-06T11:41:24+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-123282

## From the sources

In JetBrains Datalore before 2026.4 missing expiration validation of account tokens allowed a new authenticated session

---

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