CVE-2026-86490
Received Received - Intake

Improper Permission Check in JetBrains YouTrack

Publication date: 2026-09-07

Last updated on: 2026-09-07

Assigner: JetBrains s.r.o.

Description
In JetBrains YouTrack before 2026.2.18634 improper permission checks allowed overwriting of bundled apps via the app import endpoint

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Meta Information

Published
2026-09-07
Last Modified
2026-09-07
Generated
2026-09-07
AI Q&A
2026-09-07
EPSS Evaluated
N/A
NVD
CVE-2026-86490
EUVD
EUVD-2026-72506

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
jetbrains youtrack to 2026.2.18634 (exc)

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-863 The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.

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Executive Summary

This vulnerability in JetBrains YouTrack before 2026.2.18634 involves improper permission checks that allow attackers to overwrite bundled apps through the app import endpoint. This could enable unauthorized modifications to the application.

Impact Analysis

An attacker could exploit this to replace legitimate bundled apps with malicious ones, potentially leading to data breaches, unauthorized access, or system compromise. Users may face data loss or operational disruptions.

Compliance Impact

This vulnerability could violate compliance requirements by enabling unauthorized access to sensitive data, leading to potential breaches of GDPR or HIPAA. Organizations may face legal penalties or reputational damage.

Mitigation Strategies

Update JetBrains YouTrack to version 2026.2.18634 or later to address the improper permission checks.

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