---
id: CVE-2026-103493
title: >-
  In JetBrains YouTrack before 2026.2.19422 stored XSS via Mermaid and LaTeX
  content was possible
summary: >-
  In JetBrains YouTrack before 2026.2.19422 stored XSS via Mermaid and LaTeX
  content was possible
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N'
cwe:
  - CWE-79
vendor: jetbrains
product: youtrack
affected:
  - youtrack < 2026.2.19422
patched:
  - youtrack 2026.2.19422
published: '2026-10-01'
updated: '2026-10-01'
sourceUpdated: '2026-10-01T16:17:36.470'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-103493'
references:
  - url: 'https://www.jetbrains.com/privacy-security/issues-fixed/'
    label: cve@jetbrains.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-01T15:05:42.605246Z'
ingestedAt: '2026-10-01T09:41:14.169Z'
epss: 0.00221
epssPercentile: 0.12615
---

## Overview

In JetBrains YouTrack before 2026.2.19422 stored XSS via Mermaid and LaTeX content was possible

## Affected

- `youtrack < 2026.2.19422`

## Remediation

Upgrade past the affected range:

- `youtrack 2026.2.19422`