{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "4.16.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "37e13d1d60af8f1422c01b5e9f1c6bc355d03b85"
            },
            {
              "fixed": "beb4de9dcb6a475129595b943c9a34264420df09"
            },
            {
              "fixed": "ef409b4227ca16bdd23b3e3eba38530292c20773"
            }
          ],
          "repo": "https://github.com/coturn/coturn",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-5x2p-4vqj-f6m4"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-400",
      "CWE-770"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73214.json"
  },
  "details": "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.",
  "id": "CVE-2026-73214",
  "modified": "2026-08-14T03:52:03.962902797Z",
  "published": "2026-08-11T17:34:51.860Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/coturn/coturn/releases/tag/4.16.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73214.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/coturn/coturn/security/advisories/GHSA-5x2p-4vqj-f6m4"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-73214"
    },
    {
      "type": "FIX",
      "url": "https://github.com/coturn/coturn/commit/37e13d1d60af8f1422c01b5e9f1c6bc355d03b85"
    },
    {
      "type": "FIX",
      "url": "https://github.com/coturn/coturn/commit/beb4de9dcb6a475129595b943c9a34264420df09"
    },
    {
      "type": "FIX",
      "url": "https://github.com/coturn/coturn/pull/2003"
    },
    {
      "type": "FIX",
      "url": "https://github.com/coturn/coturn/pull/2012"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "coturn allocates a full per-peer SSL/session before verifying the DTLS cookie, enabling source-spoofing/botnet state-exhaustion DoS"
}