---
id: CVE-2026-86492
title: >-
  In JetBrains YouTrack before 2026.2.18634 a shared token cache allowed
  cross-tenant theft of GitHub App installation tokens
summary: >-
  In JetBrains YouTrack before 2026.2.18634 a shared token cache allowed
  cross-tenant theft of GitHub App installation tokens
severity: high
cvss: 8.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N'
cwe:
  - CWE-488
vendor: JetBrains
product: YouTrack
affected:
  - YouTrack < 2026.2.18634
published: '2026-09-07'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T15:30:03.247'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-86492'
references:
  - url: 'https://www.jetbrains.com/privacy-security/issues-fixed/'
    label: cve@jetbrains.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-08T10:14:31.289736Z'
epss: 0.00899
epssPercentile: 0.57954
ingestedAt: '2026-09-08T15:33:26.979Z'
---

## Overview

In JetBrains YouTrack before 2026.2.18634 a shared token cache allowed cross-tenant theft of GitHub App installation tokens

## Remediation

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