YouTrack <2025.3.161254 & 2026.1.14042 Unauth Takeover
CVE-2026-86478 Published on September 7, 2026
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
Vulnerability Analysis
CVE-2026-86478 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be critical as this vulnerability has a high impact to the confidentiality, integrity and availability of this component.
Weakness Type
Authentication Bypass by Spoofing
This attack-focused weakness is caused by improperly implemented authentication schemes that are subject to spoofing attacks.
Products Associated with CVE-2026-86478
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Affected Versions
JetBrains YouTrack:- Before 2025.3.161254, 2026.1.14042 is affected.