CVE-2026-86478
Received Received - Intake

Authentication Bypass in YouTrack Helpdesk

Publication date: 2026-09-07

Last updated on: 2026-09-07

Assigner: JetBrains s.r.o.

Description
In JetBrains YouTrack before 2025.3.161254, 2026.1.14042 improper authentication in YouTrack Helpdesk allowed unauthenticated account takeover via a self-asserted email address

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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-2026-86478
EUVD
EUVD-2026-72494

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
jetbrains youtrack to 2025.3.161254 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-290 This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks.

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Executive Summary

This vulnerability is an improper authentication issue in JetBrains YouTrack before versions 2025.3.161254 and 2026.1.14042. It allows unauthenticated attackers to take over user accounts by exploiting a self-asserted email address mechanism.

Impact Analysis

An attacker could gain full control of your YouTrack Helpdesk account without needing your password. This could lead to unauthorized access to sensitive data, manipulation of issues or projects, and potential data theft or corruption.

Compliance Impact

This vulnerability could lead to unauthorized access to personal or sensitive data, violating GDPR's data protection requirements and HIPAA's safeguards for protected health information. Organizations may face compliance violations, legal penalties, and reputational damage.

Mitigation Strategies

Update JetBrains YouTrack to version 2025.3.161254 or later, or at least 2026.1.14042 to address the improper authentication issue. Disable self-asserted email-based account takeover mechanisms until patched.

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