CVE-2026-100268: CWE-639 in JetBrains YouTrack
CVE-2026-100268 is a vulnerability in JetBrains YouTrack before version 2026.2.19197 that allows project administrators to read comments from other projects via notification templates. This issue relates to improper access control (CWE-639). The vulnerability has a high severity with a CVSS score of 7.7. No official patch link is provided in the data, and the product is not a cloud service.
AI Analysis
Technical Summary
This vulnerability in JetBrains YouTrack (versions before 2026.2.19197) allows project administrators to access comments from projects they do not administer by exploiting notification templates. The underlying issue is categorized as CWE-639, which involves authorization bypass through improper access control. The CVSS 3.1 vector indicates network attack vector, low attack complexity, requiring privileges, no user interaction, and a scope change with high confidentiality impact but no integrity or availability impact.
Potential Impact
An attacker with project administrator privileges can read comments from other projects, potentially exposing sensitive information across project boundaries. The confidentiality impact is high, but integrity and availability are not affected. There are no known exploits in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch links are provided, users should monitor JetBrains advisories for updates. Until a fix is available, restrict project administrator privileges to trusted users only.
CVE-2026-100268: CWE-639 in JetBrains YouTrack
Description
CVE-2026-100268 is a vulnerability in JetBrains YouTrack before version 2026.2.19197 that allows project administrators to read comments from other projects via notification templates. This issue relates to improper access control (CWE-639). The vulnerability has a high severity with a CVSS score of 7.7. No official patch link is provided in the data, and the product is not a cloud service.
CVSS v3.1
Score 7.7high
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
This vulnerability in JetBrains YouTrack (versions before 2026.2.19197) allows project administrators to access comments from projects they do not administer by exploiting notification templates. The underlying issue is categorized as CWE-639, which involves authorization bypass through improper access control. The CVSS 3.1 vector indicates network attack vector, low attack complexity, requiring privileges, no user interaction, and a scope change with high confidentiality impact but no integrity or availability impact.
Potential Impact
An attacker with project administrator privileges can read comments from other projects, potentially exposing sensitive information across project boundaries. The confidentiality impact is high, but integrity and availability are not affected. There are no known exploits in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch links are provided, users should monitor JetBrains advisories for updates. Until a fix is available, restrict project administrator privileges to trusted users only.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- JetBrains
- Date Reserved
- 2026-09-25T17:02:07.492Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6abd2c322a4e24523d2ec309
Added to database: 09/30/2026, 15:35:14 UTC
Last enriched: 09/30/2026, 15:48:25 UTC
Last updated: 10/01/2026, 03:42:47 UTC
Views: 11
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