---
id: CVE-2026-86487
title: >-
  In JetBrains YouTrack before 2026.2.18634 a crafted WebSocket message allowed
  read-only whiteboard users to modify canvas content
summary: >-
  In JetBrains YouTrack before 2026.2.18634 a crafted WebSocket message allowed
  read-only whiteboard users to modify canvas content
severity: low
cvss: 3.1
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N'
cwe:
  - CWE-863
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-2026-86487'
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: '2026-09-08T10:22:01.723359Z'
epss: 0.00197
epssPercentile: 0.0838
ingestedAt: '2026-09-08T15:33:26.979Z'
---

## Overview

In JetBrains YouTrack before 2026.2.18634 a crafted WebSocket message allowed read-only whiteboard users to modify canvas content

## Remediation

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