{"cve":"CVE-2026-55215","nvd":{"published":"2026-08-28T20:18:26.353","modified":"2026-09-08T21:08:37.320","status":"Awaiting Analysis","description":"MariaDB Connector/Node.js is used to connect applications developed on Node.js to MariaDB and MySQL databases. Prior to versions 3.3.3, 3.4.6, and 3.5.3, when ssl is enabled without a pinned CA or server certificate, MariaDB Connector/Node.js sends credentials before completing certificate fingerprint validation. In lib/cmd/handshake/auth/handshake.js, a server that selects mysql_clear_password as the initial authentication plugin can receive the password before the post-TLS identity check. In lib/cmd/handshake/authentication.js, an authentication switch can evaluate the previous plugin instead of the requested target plugin, allowing mysql_clear_password to send the credential first. An active man-in-the-middle can present a self-signed certificate, capture the database password, and use it to authenticate directly even though the connector later rejects the server and closes the connection. This issue is fixed in versions 3.3.3, 3.4.6, and 3.5.3.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":7.5},"cwes":["CWE-295","CWE-522"],"references":["https://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/514576a5a1fab3ea8498613e259a0b7a764e7302","https://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/c47d7275835c78c7eb8186cd23e9d57c045c128b","https://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/ecd36958e6e3bf0e0fa8389546f50c0ed6dbb2ac","https://github.com/mariadb-corporation/mariadb-connector-nodejs/releases/tag/3.3.3","https://github.com/mariadb-corporation/mariadb-connector-nodejs/releases/tag/3.4.6"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:50:50.842544443+00:00"},"epss":{"cve":"CVE-2026-55215","score":0.00569,"percentile":0.4716,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-cqhc-2h57-wpxf","url":"https://osv.dev/vulnerability/GHSA-cqhc-2h57-wpxf","summary":"MariaDB's connector leaks the cleartext password to an MitM despite `ssl: true`","modified":"2026-09-02T16:25:30.304591828Z","packages":[{"ecosystem":"npm","name":"mariadb","purl":"pkg:npm/mariadb","ranges":["<3.2.4"],"fixed":["3.2.4"]},{"ecosystem":"npm","name":"mariadb","purl":"pkg:npm/mariadb","ranges":[">=3.3.0 <3.3.3"],"fixed":["3.3.3"]},{"ecosystem":"npm","name":"mariadb","purl":"pkg:npm/mariadb","ranges":[">=3.4.0 <3.4.6"],"fixed":["3.4.6"]},{"ecosystem":"npm","name":"mariadb","purl":"pkg:npm/mariadb","ranges":[">=3.5.0 <3.5.3"],"fixed":["3.5.3"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}