High 7.1Published Aug 11, 2026

CVE-2026-73215The coturn server can end in a state where it does not accept more requests with "even-port" enabled.

Updated under an hour ago (2026-10-19 06:30 UTC)

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It affects coturn. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for coturn

Exploited in the last 30 days

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.

CVSS: 7.1 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Weakness (CWE): CWE-400, CWE-772
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Aug 13, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

coturn coturn coturn:coturn (from the name)	before 4.17.0	CNA record

References

https://github.com/coturn/coturn/security/advisories/GHSA-847g-qmc6-6m4rx-refsource-confirm
https://github.com/coturn/coturn/commit/4adbd82e78456e13109bf44deed4ec3aceb0bab2x-refsource-misc
https://github.com/coturn/coturn/releases/tag/4.17.0x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.