CVE-2026-86494: CWE-862 in JetBrains YouTrack
Description
CVE-2026-86494 is a vulnerability in JetBrains YouTrack versions before 2026.2.18634 that allows unauthorized changes to links on inaccessible issues when cloning a whiteboard. This issue is classified under CWE-862 (Missing Authorization). The vulnerability has a high severity with a CVSS score of 7.7, indicating it requires low privileges to exploit and can cause a significant integrity impact without affecting confidentiality or availability.
CVSS v3.1
Score 7.7high
Affected software
JetBrains
YouTrack
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
JetBrains YouTrack before version 2026.2.18634 contains a missing authorization vulnerability (CWE-862) where cloning a whiteboard permits unauthorized users with limited privileges to modify links on issues they cannot access. This flaw allows integrity violations by enabling changes to protected issue links without proper authorization. The vulnerability is rated high severity with a CVSS 3.1 score of 7.7, reflecting network attack vector, low attack complexity, and no user interaction required.
Potential Impact
An attacker with limited privileges can exploit this vulnerability to modify links on issues that are otherwise inaccessible to them, compromising the integrity of issue tracking data. There is no impact on confidentiality or availability. This could lead to unauthorized manipulation of issue relationships and potentially disrupt workflows or tracking accuracy.
Mitigation Recommendations
A fix is available in JetBrains YouTrack version 2026.2.18634. Users should upgrade to this version or later to remediate the vulnerability. Since this is not a cloud service, remediation requires applying the official update. Patch status is confirmed by the affectedVersions field indicating the vulnerability is fixed starting from 2026.2.18634.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- JetBrains
- Date Reserved
- 2026-09-07T16:13:38.206Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a9ee859acd9273b49f0e41e
Added to database: 09/07/2026, 16:37:45 UTC
Last enriched: 09/15/2026, 01:18:33 UTC
Last updated: 10/22/2026, 13:15:24 UTC
Views: 81
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