CVE-2026-73215
CVE-2026-73215: 1 tracked advisory record across Red Hat. Compare vendor sources and published fix guidance.
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Vendor advisory comparison
Red Hat
1 advisory- Advisory severityMedium6.5
Medium [CVE-2026-73215] Denial of Service due to incorrect port allocation
CVE-2026-73215Source published Source updated
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. A flaw was found in Coturn. An authenticated client can exploit a vulnerability by sending a specially crafted 'EVEN-PORT Allocate request' with a reservation bit set to zero. This causes the server to incorrectly mark an unused port as taken, leading to the permanent exhaustion of the relay port pool. Consequently, new…
- Affected products in this advisory
- No product details extracted. Check the source bulletin.
- Source-reported affected versions
- < 4.17.0
- Source-reported fixed versions
- 4.17.0
- Mitigation guidance
- Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability. Upgrade to coturn 4.17.0.
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