YouTrack < 2026.2.18634 Cross-Tenant GitHub App Token Theft via Shared Cache
CVE-2026-86492 Published on September 7, 2026
In JetBrains YouTrack before 2026.2.18634 a shared token cache allowed cross-tenant theft of GitHub App installation tokens
Vulnerability Analysis
CVE-2026-86492 is exploitable with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality, with no impact on integrity, and no impact on availability.
Weakness Type
Exposure of Data Element to Wrong Session
The product does not sufficiently enforce boundaries between the states of different sessions, causing data to be provided to, or used by, the wrong session.
Products Associated with CVE-2026-86492
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Affected Versions
JetBrains YouTrack:- Before 2026.2.18634 is affected.