VDB
CVE-2026-73214
CVE-2026-73214
PUBLISHED
CVSS 8.2 HIGH
Reported by GitHub_M · Published August 11, 2026
Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.16.0, dtls_server_input_handler() and create_new_connected_udp_socket() in src/apps/relay/dtls_listener.c retain OpenSSL dtls1_reassemble_fragment() state for a 35-byte fragmented ClientHello declaring a 650,000-byte handshake before cookie validation, allowing an unauthenticated remote sender using fresh UDP tuples to exhaust memory without TURN credentials, a completed handshake, a valid cookie, or source spoofing. This issue is fixed in version 4.16.0.
Risk Scores
CVSS 4.0
8.2
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| coturn | coturn | < 4.16.0 |
| coturn | coturn | < 4.16.0, < 4.16.0 |
Timeline
- Aug 11, 2026 CVE Published
- Aug 12, 2026 Coalition ESS Score
- Aug 15, 2026 Security Advisory
- Aug 24, 2026 EPSS Score
- Aug 26, 2026 EPSS Score
- Aug 30, 2026 EPSS Score
- Sep 3, 2026 EPSS Score
- Sep 6, 2026 EPSS Score
- Sep 9, 2026 EPSS Score
- Sep 9, 2026 CVE Updated
- Sep 12, 2026 EPSS Score
- Sep 16, 2026 EPSS Score
References
- https://github.com/coturn/coturn/security/advisories/GHSA-5x2p-4vqj-f6m4 x_refsource_CONFIRM
- https://github.com/coturn/coturn/pull/2003 x_refsource_MISC
- https://github.com/coturn/coturn/pull/2012 x_refsource_MISC
- https://github.com/coturn/coturn/commit/37e13d1d60af8f1422c01b5e9f1c6bc355d03b85 x_refsource_MISC
- https://github.com/coturn/coturn/commit/beb4de9dcb6a475129595b943c9a34264420df09 x_refsource_MISC
- https://github.com/coturn/coturn/releases/tag/4.16.0 x_refsource_MISC