{"id":"CVE-2026-107819","revision":"b2139c9bb7d14d4081f16fc2608eb27e","records":[{"revision":"b2139c9bb7d14d4081f16fc2608eb27e","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-107819","aliases":[],"title":"MariaDB Connector/C: libmariadb allowed cleartext password leakage on TLS hostname verification failure","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.","state":0,"publishedAt":"2026-10-09T17:25:45.082+00:00","modifiedAt":"2026-10-09T17:59:15.334+00:00","affected":[{"ecosystem":"Vendor product","name":"server","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"MariaDB\",\n                    \"product\": \"server\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 3.4.1, < 3.4.10\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","score":5.9,"severity":"MEDIUM"}],"references":["https://github.com/MariaDB/server/security/advisories/GHSA-fmq9-qjxj-qpf7","https://github.com/mariadb-corporation/mariadb-connector-c/commit/e8c0a16d94ddf844668d684a7d42b37ac8e0fc02","https://github.com/mariadb-corporation/mariadb-connector-c/releases/tag/v3.4.10","https://jira.mariadb.org/browse/CONC-846"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-107819","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-107819","identifiers":["CVE-2026-107819"]},"retained":false,"historicalAffected":[]}],"coverage":[]}