CVE-2026-86478
Critical
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
SeverityCritical
CVSS9.8
Exploit probability—
Product
YouTrack
PublishedSep 7, 2026
First seenSep 7, 2026
Weakness typeCWE-290CWE-290
How to fix
Update
- JetBrains YouTrack2025.3.161254, 2026.1.14042 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| JetBrains YouTrack | v < 2025.3.161254, 2026.1.14042 | 2025.3.161254, 2026.1.14042 |
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