---
id: CVE-2026-86497
title: >-
  In JetBrains YouTrack before 2026.2.18769 changing a mailbox host without
  re-authentication allowed a project administrator to exfiltrate stored mailbox
  credentials
summary: >-
  In JetBrains YouTrack before 2026.2.18769 changing a mailbox host without
  re-authentication allowed a project administrator to exfiltrate stored mailbox
  credentials
severity: medium
cvss: 6.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N'
cwe:
  - CWE-201
vendor: JetBrains
product: YouTrack
affected:
  - YouTrack < 2026.2.18769
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-2026-86497'
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: '2026-09-08T10:13:48.774522Z'
epss: 0.00513
epssPercentile: 0.41315
ingestedAt: '2026-09-08T15:33:26.980Z'
---

## Overview

In JetBrains YouTrack before 2026.2.18769 changing a mailbox host without re-authentication allowed a project administrator to exfiltrate stored mailbox credentials

## Remediation

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