Improper Update of Reference Count Affecting coturn/coturn package, versions [,4.17.0)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-COTURNCOTURN-19427494
- published29 Aug 2026
- disclosed11 Aug 2026
- creditUnknown
Introduced: 11 Aug 2026
NewCVE-2026-73216 (opens in a new tab)How to fix?
Upgrade coturn/coturn to version 4.17.0 or higher.
Overview
Affected versions of this package are vulnerable to Improper Update of Reference Count in the shutdown_client_connection function. An attacker can exhaust relay ports by bypassing user and total quota restrictions through repeated allocation closures while maintaining session and mobility tickets.