Is CVE-2026-86478 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-86478?

CVE-2026-86478 has a CVSS v3 severity of CRITICAL (9.8).

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CVE-2026-86478

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