CVE-2026-73216 — coturn: mobility disconnects bypass allocation quotas and exhaust relay capacity
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() a…
Published: 2026-08-11 · CVSS: 6.5 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7