Medium
mariadb — security advisory
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.
- Products
- mariadb
- Affected versions
- 1:10.11.11-0ubuntu0.24.04.2, 1:10.11.13-0ubuntu0.24.04.1, 1:10.11.14-0ubuntu0.24.04.1, 1:10.11.4-1, 1:10.11.5-3, 1:10.11.6-1, 1:10.11.6-2, 1:10.11.7-2ubuntu1, 1:10.11.7-2ubuntu2, 1:10.11.8-0ubuntu0.24.04.1, 1:11.8.3-1build1, 1:11.8.5-1, 1:11.8.5-2, 1:11.8.5-3, 1:11.8.5-4, 1:11.8.6-1, 1:11.8.6-3, 1:11.8.6-4, 1:11.8.6-5, 1:11.8.6-5ubuntu0.1, 1:11.8.8-1, 1:11.8.9+ds-4ubuntu2
- Fixed versions
- Not specified
- CVEs
- CVE-2026-107819
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 02:00 UTC · Revision 1
Source evidence
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.
osv:UBUNTU-CVE-2026-107819
mariadb
Fixed versions: Not specified
mariadb
Fixed versions: Not specified
mariadb
Fixed versions: Not specified
Complete source record
{
"id": "348a0847301b855142e4745f481cb8baec7199762ea824e0e50440f11bdc3131",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-107819",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-107819",
"summary": "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.",
"evidence": "osv:UBUNTU-CVE-2026-107819",
"products": [
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"evidence": "/affected/0/package/name"
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{
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{
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{
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}
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},
{
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},
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{
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"evidence": "/affected/2/versions"
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{
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"evidence": "/affected/2/versions"
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{
"value": "1:11.8.5-3",
"evidence": "/affected/2/versions"
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{
"value": "1:11.8.5-4",
"evidence": "/affected/2/versions"
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{
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{
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{
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{
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]
}
],
"severity": "medium",
"structured": {
"id": "UBUNTU-CVE-2026-107819",
"aliases": [
"UBUNTU-CVE-2026-107819"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
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"events": [
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"database_specific": {
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},
"ecosystem_specific": {
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},
{
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"binary_version": "1:10.11.14-0ubuntu0.24.04.1"
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{
"binary_name": "libmariadbd19t64",
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{
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{
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{
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{
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{
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"binary_version": "1:10.11.14-0ubuntu0.24.04.1"
},
{
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"binary_version": "1:10.11.14-0ubuntu0.24.04.1"
},
{
"binary_name": "mariadb-plugin-gssapi-client",
"binary_version": "1:10.11.14-0ubuntu0.24.04.1"
},
{
"binary_name": "mariadb-plugin-gssapi-server",
"binary_version": "1:10.11.14-0ubuntu0.24.04.1"
},
{
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{
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{
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{
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"binary_version": "1:10.11.14-0ubuntu0.24.04.1"
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{
"binary_name": "mariadb-plugin-provider-lz4",
"binary_version": "1:10.11.14-0ubuntu0.24.04.1"
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{
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{
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{
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"binary_version": "1:10.11.14-0ubuntu0.24.04.1"
},
{
"binary_name": "mariadb-plugin-spider",
"binary_version": "1:10.11.14-0ubuntu0.24.04.1"
},
{
"binary_name": "mariadb-server",
"binary_version": "1:10.11.14-0ubuntu0.24.04.1"
},
{
"binary_name": "mariadb-server-10.5",
"binary_version": "1:10.11.14-0ubuntu0.24.04.1"
},
{
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},
{
"binary_name": "mariadb-test",
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{
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{
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{
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{
"binary_name": "mariadb-plugin-spider",
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{
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{
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{
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{
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{
"ranges": [
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],
"package": {
"name": "mariadb",
"purl": "pkg:deb/ubuntu/mariadb?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
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"1:11.8.6-4",
"1:11.8.6-5",
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],
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},
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{
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{
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{
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{
"binary_name": "mariadb-plugin-connect-jdbc",
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},
{
"binary_name": "mariadb-plugin-cracklib-password-check",
"binary_version": "1:11.8.6-5ubuntu0.1"
},
{
"binary_name": "mariadb-plugin-gssapi-client",
"binary_version": "1:11.8.6-5ubuntu0.1"
},
{
"binary_name": "mariadb-plugin-gssapi-server",
"binary_version": "1:11.8.6-5ubuntu0.1"
},
{
"binary_name": "mariadb-plugin-hashicorp-key-management",
"binary_version": "1:11.8.6-5ubuntu0.1"
},
{
"binary_name": "mariadb-plugin-mroonga",
"binary_version": "1:11.8.6-5ubuntu0.1"
},
{
"binary_name": "mariadb-plugin-oqgraph",
"binary_version": "1:11.8.6-5ubuntu0.1"
},
{
"binary_name": "mariadb-plugin-provider-bzip2",
"binary_version": "1:11.8.6-5ubuntu0.1"
},
{
"binary_name": "mariadb-plugin-provider-lz4",
"binary_version": "1:11.8.6-5ubuntu0.1"
},
{
"binary_name": "mariadb-plugin-provider-lzma",
"binary_version": "1:11.8.6-5ubuntu0.1"
},
{
"binary_name": "mariadb-plugin-provider-lzo",
"binary_version": "1:11.8.6-5ubuntu0.1"
},
{
"binary_name": "mariadb-plugin-provider-snappy",
"binary_version": "1:11.8.6-5ubuntu0.1"
},
{
"binary_name": "mariadb-plugin-rocksdb",
"binary_version": "1:11.8.6-5ubuntu0.1"
},
{
"binary_name": "mariadb-plugin-s3",
"binary_version": "1:11.8.6-5ubuntu0.1"
},
{
"binary_name": "mariadb-plugin-spider",
"binary_version": "1:11.8.6-5ubuntu0.1"
},
{
"binary_name": "mariadb-server",
"binary_version": "1:11.8.6-5ubuntu0.1"
},
{
"binary_name": "mariadb-server-compat",
"binary_version": "1:11.8.6-5ubuntu0.1"
},
{
"binary_name": "mariadb-server-core",
"binary_version": "1:11.8.6-5ubuntu0.1"
},
{
"binary_name": "mariadb-test",
"binary_version": "1:11.8.6-5ubuntu0.1"
},
{
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]
}
}
],
"modified": "2026-10-17T12:58:01.713882858Z",
"provider": "osv",
"upstream": [
"CVE-2026-107819"
],
"references": [
"https://ubuntu.com/security/CVE-2026-107819",
"https://www.cve.org/CVERecord?id=CVE-2026-107819",
"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"
]
},
"related_cves": [
{
"value": "CVE-2026-107819",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 357886,
"published_at": "2026-10-09T18:17:00+00:00"
}