---
id: CVE-2026-123336
title: >-
  In JetBrains YouTrack before 2026.2.19728 the attachment size limit could be
  bypassed via AI assistant thread conversion
summary: >-
  In JetBrains YouTrack before 2026.2.19728 the attachment size limit could be
  bypassed via AI assistant thread conversion
severity: low
cvss: 3.1
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L'
cvssSource: cna
cwe:
  - CWE-770
vendor: JetBrains
product: YouTrack
affected:
  - YouTrack < 2026.2.19728
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-06T13:52:00.615781Z'
published: '2026-11-06'
updated: '2026-11-06'
sourceUpdated: '2026-11-06T14:45:24.850Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-123336'
references:
  - url: 'https://www.jetbrains.com/privacy-security/issues-fixed/'
tags:
  - cve.org
ingestedAt: '2026-11-06T10:49:35.341Z'
---

## Overview

In JetBrains YouTrack before 2026.2.19728 the attachment size limit could be bypassed via AI assistant thread conversion

## Affected

- `YouTrack < 2026.2.19728`

## Remediation

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