Security Advisory

CVE-2026-73215

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-08-11 17:38:07

Last updated 2026-08-11 17:38:07

Assigner GitHub_M

CVSS score not scored

State PUBLISHED

Description

Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.17.0, turnports_allocate_even() in src/apps/relay/turn_ports.c marks the unused odd sibling port as TPS_TAKEN_ODD for an EVEN-PORT Allocate request with reservation bit R=0 even though no RTCP socket will release it, allowing an authenticated client to permanently exhaust the relay port pool and cause subsequent allocations to fail with STUN error 508. This issue is fixed in version 4.17.0.

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