---
id: CVE-2026-86478
title: >-
  In JetBrains YouTrack before 2025.3.161254, 

  2026.1.14042 improper authentication in YouTrack Helpdesk allowed
  unauthenticated account takeover via a self-asserted email address
summary: >-
  In JetBrains YouTrack before 2025.3.161254, 

  2026.1.14042 improper authentication in YouTrack Helpdesk allowed
  unauthenticated account takeover via a self-asserted email address
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-290
vendor: JetBrains
product: YouTrack
affected:
  - |-
    YouTrack < 2025.3.161254, 
    2026.1.14042
published: '2026-09-07'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T05:18:19.617'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-86478'
references:
  - url: 'https://www.jetbrains.com/privacy-security/issues-fixed/'
    label: cve@jetbrains.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: total
  timestamp: '2026-09-08T10:16:36.481011Z'
epss: 0.00606
epssPercentile: 0.46748
ingestedAt: '2026-09-08T15:33:26.979Z'
---

## Overview

In JetBrains YouTrack before 2025.3.161254, 
2026.1.14042 improper authentication in YouTrack Helpdesk allowed unauthenticated account takeover via a self-asserted email address

## Remediation

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