CVE-2026-73216CWE-400denial-of-service

CVE-2026-73216

Medium · published August 11, 2026

CVSS v3.1
6.5
EPSS
1%
Percentile
46.5
In the wild
Unconfirmed
What it is

Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.17.0, shutdown_client_connection() in src/server/ns_turn_server.c prematurely calls dec_quota() and releases bandwidth accounting during the first-stage close of a mobility-enabled allocation while preserving the allocation, relay socket, session, and mobility ticket, allowing an authenticated client to bypass --user-quota and --total-quota and exhaust relay ports. This issue is fixed in version 4.17.0.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00570 · 46.5th percentile
Weakness
CWE-400 · Uncontrolled Resource Consumption
Published
2026-08-11T22:18Z
References (3)
https://github.com/coturn/coturn/commit/3c5b2615fd405c4e7c5bf3fbeef895c94a90671b · [email protected]https://github.com/coturn/coturn/releases/tag/4.17.0 · [email protected]https://github.com/coturn/coturn/security/advisories/GHSA-f6hc-79w3-p8pq · [email protected]
EPSS history
Timeline
  • 11 AUG 17:39Z
    coturn: mobility disconnects bypass allocation quotas and exhaust relay capacity
    cvelistv5