CVE-2026-100272: CWE-639 in JetBrains YouTrack
CVE-2026-100272 is a vulnerability in JetBrains YouTrack before version 2026.2.19197 where missing authorization in the notification template preview feature allowed Project Administrators to read restricted issues. This issue is classified under CWE-639 (Authorization Bypass Through User-Controlled Key). The vulnerability has a CVSS 3.1 base score of 4.9, indicating medium severity. No known exploits are reported in the wild. The affected versions are all releases before 2026.2.19197.
AI Analysis
Technical Summary
JetBrains YouTrack versions prior to 2026.2.19197 contain an authorization bypass vulnerability (CWE-639) in the notification template preview functionality. This flaw allows users with Project Administrator privileges to access restricted issues that they should not be able to view. The vulnerability does not require user interaction and has a network attack vector with low attack complexity. The impact is confidentiality loss without affecting integrity or availability.
Potential Impact
An attacker with Project Administrator privileges can read restricted issues that should be inaccessible, leading to unauthorized disclosure of sensitive information. There is no impact on integrity or availability. The vulnerability could lead to exposure of confidential project data.
Mitigation Recommendations
A fix is available in JetBrains YouTrack version 2026.2.19197. Users should upgrade to this version or later to remediate the vulnerability. Since this is not a cloud service, remediation depends on applying the official update. No additional mitigations are indicated by the vendor advisory.
CVE-2026-100272: CWE-639 in JetBrains YouTrack
Description
CVE-2026-100272 is a vulnerability in JetBrains YouTrack before version 2026.2.19197 where missing authorization in the notification template preview feature allowed Project Administrators to read restricted issues. This issue is classified under CWE-639 (Authorization Bypass Through User-Controlled Key). The vulnerability has a CVSS 3.1 base score of 4.9, indicating medium severity. No known exploits are reported in the wild. The affected versions are all releases before 2026.2.19197.
CVSS v3.1
Score 4.9medium
Affected software
JetBrains
YouTrack
pkg:maven/com.jetbrains/youtrackRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
JetBrains YouTrack versions prior to 2026.2.19197 contain an authorization bypass vulnerability (CWE-639) in the notification template preview functionality. This flaw allows users with Project Administrator privileges to access restricted issues that they should not be able to view. The vulnerability does not require user interaction and has a network attack vector with low attack complexity. The impact is confidentiality loss without affecting integrity or availability.
Potential Impact
An attacker with Project Administrator privileges can read restricted issues that should be inaccessible, leading to unauthorized disclosure of sensitive information. There is no impact on integrity or availability. The vulnerability could lead to exposure of confidential project data.
Mitigation Recommendations
A fix is available in JetBrains YouTrack version 2026.2.19197. Users should upgrade to this version or later to remediate the vulnerability. Since this is not a cloud service, remediation depends on applying the official update. No additional mitigations are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- JetBrains
- Date Reserved
- 2026-09-25T17:02:08.757Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6abd2c322a4e24523d2ec30d
Added to database: 09/30/2026, 15:35:14 UTC
Last enriched: 09/30/2026, 15:50:16 UTC
Last updated: 10/01/2026, 03:42:59 UTC
Views: 12
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