HIGH 7.1 NVD
CVE-2026-73215
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
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.
References
- https://github.com/coturn/coturn/commit/4adbd82e78456e13109bf44deed4ec3aceb0bab2
- https://github.com/coturn/coturn/releases/tag/4.17.0
- https://github.com/coturn/coturn/security/advisories/GHSA-847g-qmc6-6m4r
This high severity vulnerability with a CVSS score of 7.1 was published on 2026-08-11 via NVD.
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