CVE-2026-86492
HighCVSS 8.5Exploitation Probability (EPSS)
Low risk45th percentile - higher than 45% of all known CVEs
Summary
In JetBrains YouTrack before 2026.2.18634, a shared token cache allowed cross-tenant theft of GitHub App installation tokens.
Risk Assessment
The risk is that tokens for GitHub App can be stolen by another tenant, potentially leading to unauthorized access to repositories and data.
Recommendation
Update YouTrack to 2026.2.18634 or later. Also review configuration of shared resources and tokens.
Other vulnerabilities in YouTrack
See all- CVE-2026-75045Critical
In JetBrains YouTrack before 2025.3.156085, 2026.1.13913, 2026.2.18112 an unauthenticated attacker could download database backups via shared draft signature
- CVE-2026-86498High
In JetBrains YouTrack before 2025.3.160480 and 2026.1.14047, PUT requests on link sub-resources allowed modification of linked entities without update permission.
- CVE-2026-86494High
In JetBrains YouTrack before 2026.2.18634, cloning a whiteboard allowed unauthorized changes to links on inaccessible issues.
- CVE-2026-49370Low
In JetBrains YouTrack before version 2026.1.13162, an information disclosure vulnerability was possible on fetchApp requests, allowing attackers to access unauthorized data.
- CVE-2026-49369Medium
A vulnerability was found in JetBrains YouTrack before version 2026.1.13162 that allows information disclosure on the Users and Groups pages.
Original NVD description (English source)
In JetBrains YouTrack before 2026.2.18634 a shared token cache allowed cross-tenant theft of GitHub App installation tokens
Vulnerability data from NVD (NIST) · CISA KEV · EPSS