high7.1
CVE-2026-73215
Coturn is a free open source implementation of TURN and STUN Server.
Impact
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.
Affected products
| Product | Affected versions |
|---|---|
| TURN And STUN Server. | before 4.17.0 |
Versions were read from the advisory text. No structured product data has been published for this record yet.