Authorization Bypass Through User-Controlled Key Affecting coturn/coturn package, versions [,4.15.0)
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-19427485
- published29 Aug 2026
- disclosed31 Jul 2026
- creditUnknown
Introduced: 31 Jul 2026
CVE-2026-65981 (opens in a new tab)How to fix?
Upgrade coturn/coturn to version 4.15.0 or higher.
Overview
Affected versions of this package are vulnerable to Authorization Bypass Through User-Controlled Key in the handle_turn_refresh process. An attacker can gain unauthorized access to another user's TURN allocation and manipulate or consume their relayed traffic by presenting a stolen MOBILITY-TICKET during session resume. This is possible because the resumed session is authenticated against the attacker's credentials rather than the original allocation owner's, allowing cross-user allocation takeover.