Is CVE-2026-73216 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-73216?

CVE-2026-73216 has a CVSS v3 severity of MEDIUM (6.5).

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CVE-2026-73216

Description

Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.17.0, shutdown_client_connection() in src/server/ns_turn_server.c prematurely calls dec_quota() and releases bandwidth accounting during the first-stage close of a mobility-enabled allocation while preserving the allocation, relay socket, session, and mobility ticket, allowing an authenticated client to bypass --user-quota and --total-quota and exhaust relay ports. This issue is fixed in version 4.17.0.