MariaDB Connector/Node.js: Uncaught exception crashes the client during ed25519 authentication with zero-configuration TLS

{
  "id": "788ca6df2f08bdc091953741b8a80a9f1a6cf9b3440f116dc62048b02bad076d",
  "url": "https://osv.dev/vulnerability/BIT-mysql-client-2026-107382",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "MariaDB Connector/Node.js: Uncaught exception crashes the client during ed25519 authentication with zero-configuration TLS",
    "summary": "MariaDB Connector/Node.js is used to connect applications developed on Node.js to MariaDB and MySQL databases. From 3.3.0 until 3.5.4, the zero-configuration TLS fingerprint-validation path calls Ed25519PasswordAuth.hash() through Authentication.validateFingerPrint, but Ed25519PasswordAuth.hash() references a seed identifier that is not in scope. Exposure requires a MariaDB server reached over TCP, TLS enabled with ssl: true or an ssl object whose rejectUnauthorized value is not false, a password set, no ssl.ca configured, and client_ed25519 negotiated as the authentication plugin. Under those conditions, a legitimate server, malicious server, or network attacker presenting a self-signed certificate can reach this path and cause a synchronous ReferenceError to escape the socket data handler. Under Node.js default uncaught-exception behavior, the client process terminates, causing denial of service. Configurations using a provided CA, rejectUnauthorized: false, another authentication plugin, or a Unix socket do not reach this vulnerable path. This issue is fixed in version 3.5.4.",
    "evidence": "osv:BIT-mysql-client-2026-107382",
    "products": [
      {
        "name": {
          "value": "mysql-client",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.5.4",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "BIT-mysql-client-2026-107382",
      "aliases": [
        "BIT-mariadb-2026-107382",
        "BIT-mariadb-min-2026-107382",
        "BIT-mysql-client-2026-107382",
        "CVE-2026-107382",
        "GHSA-cx2f-j9fh-8g68"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "3.3.0"
                },
                {
                  "fixed": "3.5.4"
                }
              ]
            }
          ],
          "package": {
            "name": "mysql-client",
            "purl": "pkg:bitnami/mysql-client",
            "ecosystem": "Bitnami"
          },
          "severity": [
            {
              "type": "CVSS_V3",
              "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"
            }
          ],
          "database_specific": {
            "source": "https://github.com/bitnami/vulndb/tree/main/data/mysql-client/BIT-mysql-client-2026-107382.json"
          }
        }
      ],
      "modified": "2026-10-16T09:56:02.258409116Z",
      "provider": "osv",
      "references": [
        "https://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/784ca3d757194a05f202d84b0c762321e76a7915",
        "https://github.com/mariadb-corporation/mariadb-connector-nodejs/releases/tag/3.5.4",
        "https://github.com/mariadb-corporation/mariadb-connector-nodejs/security/advisories/GHSA-cx2f-j9fh-8g68",
        "https://hackerone.com/reports/3835450",
        "https://jira.mariadb.org/browse/CONJS-356",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-107382"
      ],
      "provider_metadata": {
        "cpes": [
          "cpe:2.3:a:mariadb:mariadb:*:*:*:*:*:node.js:*:*"
        ],
        "severity": "Medium"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-107382",
        "evidence": "/aliases"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/database_specific/severity"
  },
  "source_id": "core-osv",
  "document_id": 338737,
  "published_at": "2026-10-16T08:44:08.872+00:00"
}