{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-107819","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-10-08T21:23:59.823Z","datePublished":"2026-10-09T17:25:45.082Z","dateUpdated":"2026-10-09T17:59:15.334Z"},"containers":{"cna":{"title":"MariaDB Connector/C: libmariadb allowed cleartext password leakage on TLS hostname verification failure","problemTypes":[{"descriptions":[{"cweId":"CWE-297","lang":"en","description":"CWE-297: Improper Validation of Certificate with Host Mismatch","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.9,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/MariaDB/server/security/advisories/GHSA-fmq9-qjxj-qpf7","tags":["x_refsource_CONFIRM"],"url":"https://github.com/MariaDB/server/security/advisories/GHSA-fmq9-qjxj-qpf7"},{"name":"https://github.com/mariadb-corporation/mariadb-connector-c/commit/e8c0a16d94ddf844668d684a7d42b37ac8e0fc02","tags":["x_refsource_MISC"],"url":"https://github.com/mariadb-corporation/mariadb-connector-c/commit/e8c0a16d94ddf844668d684a7d42b37ac8e0fc02"},{"name":"https://github.com/mariadb-corporation/mariadb-connector-c/releases/tag/v3.4.10","tags":["x_refsource_MISC"],"url":"https://github.com/mariadb-corporation/mariadb-connector-c/releases/tag/v3.4.10"},{"name":"https://jira.mariadb.org/browse/CONC-846","tags":["x_refsource_MISC"],"url":"https://jira.mariadb.org/browse/CONC-846"}],"affected":[{"vendor":"MariaDB","product":"server","versions":[{"version":">= 3.4.1, < 3.4.10","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-10-09T17:25:45.082Z"},"descriptions":[{"lang":"en","value":"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."}],"source":{"advisory":"GHSA-fmq9-qjxj-qpf7","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-09T17:59:07.078424Z","id":"CVE-2026-107819","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-10-09T17:59:15.334Z"}}]}}