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EPSS 0.3%top 79%

CVE-2026-86498: CWE-863 in JetBrains YouTrack

0
High
VulnerabilityCVE-2026-86498cvecve-2026-86498cwe-863
Published: 09/07/2026 (09/07/2026, 16:26:48 UTC)
Source: CVE Database V5
Vendor/Project: JetBrains
Product: YouTrack

Description

CVE-2026-86498 is a high-severity vulnerability in JetBrains YouTrack that affects versions before 2025.3.160480 and 2026.1.14047. It allows PUT requests on link sub-resources to modify linked entities without requiring update permissions, violating proper access control.

CVSS v3.1

Score 7.7high

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
High
Availability
None
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N

Affected software

JetBrains

YouTrack

Affected versions
=0
Mavenmore threats →ai
com.jetbrains/youtrack
pkg:maven/com.jetbrains/youtrack
Affected versions
<2025.3.160480<2026.1.14047

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AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 09/15/2026, 01:18:54 UTC

Technical Analysis

This vulnerability (CWE-863) in JetBrains YouTrack permits unauthorized modification of linked entities via PUT requests on link sub-resources. Specifically, in versions prior to 2025.3.160480 and 2026.1.14047, the system does not properly enforce update permissions when handling these requests, enabling users with limited privileges to alter linked entities improperly.

Potential Impact

The vulnerability allows an attacker with limited privileges to modify linked entities without having the necessary update permissions. This can lead to unauthorized changes within the YouTrack system, potentially impacting data integrity and trustworthiness. The CVSS score of 7.7 (high) reflects the significant impact on integrity with no impact on confidentiality or availability.

Mitigation Recommendations

A fix is available in JetBrains YouTrack versions 2025.3.160480 and 2026.1.14047. Users should upgrade to these or later versions to remediate the vulnerability. Since this is not a cloud service, remediation requires applying the official patches provided by JetBrains.

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Technical Details

Data Version
5.2
Assigner Short Name
JetBrains
Date Reserved
2026-09-07T16:13:39.471Z
Cvss Version
3.1
State
PUBLISHED

Threat ID: 6a9ee85bacd9273b49f0e442

Added to database: 09/07/2026, 16:37:47 UTC

Last enriched: 09/15/2026, 01:18:54 UTC

Last updated: 10/22/2026, 01:15:26 UTC

Views: 84

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