Vulnerability Intelligence Report
CVE-2026-86478
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
No Active Exploit Signals
CVSS Base Score
9.8
CRITICAL
Exploitability:3.9
Impact Score:5.9
EPSS Probability:0.36%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-290 ↗CWE-290
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| JetBrains | YouTrack | 0 < 2025.3.161254, 2026.1.14042 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
0.358%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | JetBrains s.r.o. · Vendor · Czech Republic |
| Reserved | 2026-09-07T16:13:33 |
| Published | 2026-09-07T16:26:40 |
| Last Updated | 2026-09-09T04:25:56 |
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