{"id":"CVE-2026-107819","published":"2026-10-09T18:17:03.533","lastModified":"2026-10-13T15:27:56.817","description":"MariaDB Connector/C is a C and C++ client library for connecting applications to MariaDB and MySQL databases. From 3.4.1 until 3.4.10, the MariaDB Connector/C libmariadb Zero-Configuration SSL authentication-switch logic checked certificate trust failure but did not reject a TLS hostname verification mismatch before selecting a non-hashing authentication plugin. An active man-in-the-middle attacker with a valid certificate for another hostname could request mysql_clear_password and obtain the database password inside the attacker-controlled TLS connection. Other MariaDB connectors are not affected. This issue is fixed in version 3.4.10.","cvssScore":5.9,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","cwes":["CWE-297"],"vendors":[],"products":[],"references":[{"url":"https://github.com/MariaDB/server/security/advisories/GHSA-fmq9-qjxj-qpf7","tags":[]},{"url":"https://github.com/mariadb-corporation/mariadb-connector-c/commit/e8c0a16d94ddf844668d684a7d42b37ac8e0fc02","tags":[]},{"url":"https://github.com/mariadb-corporation/mariadb-connector-c/releases/tag/v3.4.10","tags":[]},{"url":"https://jira.mariadb.org/browse/CONC-846","tags":[]}],"exploitRefs":[{"url":"https://github.com/MariaDB/server/security/advisories/GHSA-fmq9-qjxj-qpf7","tags":[]},{"url":"https://github.com/mariadb-corporation/mariadb-connector-c/commit/e8c0a16d94ddf844668d684a7d42b37ac8e0fc02","tags":[]},{"url":"https://github.com/mariadb-corporation/mariadb-connector-c/releases/tag/v3.4.10","tags":[]}],"hasPoc":true,"ai":null}