Is CVE-2026-86487 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-86487?

CVE-2026-86487 has a CVSS v3 severity of LOW (3.1).

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Description

In JetBrains YouTrack before 2026.2.18634 a crafted WebSocket message allowed read-only whiteboard users to modify canvas content