CVE-2026-100274
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Denial of Service in JetBrains YouTrack via Notification Template

Publication date: 2026-09-30

Last updated on: 2026-09-30

Assigner: JetBrains s.r.o.

Description
In JetBrains YouTrack before 2026.2.19197 project Admin could trigger DoS via a notification template

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Meta Information

Published
2026-09-30
Last Modified
2026-09-30
Generated
2026-09-30
AI Q&A
2026-09-30
EPSS Evaluated
N/A
NVD
CVE-2026-100274
EUVD
EUVD-2026-90018

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
jetbrains youtrack to 2026.2.19197 (exc)

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-770 The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

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Executive Summary

This vulnerability in JetBrains YouTrack before version 2026.2.19197 allows a project Admin to cause a Denial of Service (DoS) by exploiting a notification template. The issue arises from improper handling of template processing, leading to system resource exhaustion.

Impact Analysis

If you are an administrator or user of an affected JetBrains YouTrack instance, this vulnerability could disrupt service availability. The DoS condition may cause the system to become unresponsive, affecting all users and operations dependent on the platform.

Mitigation Strategies

Update JetBrains YouTrack to version 2026.2.19197 or later to address the DoS vulnerability in notification templates.

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