DEBIAN-CVE-2026-34303
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.0-8.0.45, 8.4.0-8.4.8 and 9.0.0-9.6.0. Easily exploitable vulnerability allows low privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 6.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).
DEBIAN-CVE-2026-34303
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:DEBIAN-CVE-2026-34303
mariadb
Source reference: /affected/0/package/name
- Affected versions
- 1:10.11.11-0+deb12u1
Source reference:
/affected/0/versions1:10.11.13-0+deb12u1Source reference:
/affected/0/versions1:10.11.14-0+deb12u1Source reference:
/affected/0/versions1:10.11.14-0+deb12u2Source reference:
/affected/0/versions1:10.11.3-1Source reference:
/affected/0/versions1:10.11.3-2~exp1Source reference:
/affected/0/versions1:10.11.4-1Source reference:
/affected/0/versions1:10.11.4-1~deb12u1Source reference:
/affected/0/versions1:10.11.5-1Source reference:
/affected/0/versions1:10.11.5-2Source reference:
/affected/0/versions1:10.11.5-3Source reference:
/affected/0/versions1:10.11.6-0+deb12u1Source reference:
/affected/0/versions1:10.11.6-1Source reference:
/affected/0/versions1:10.11.6-2Source reference:
/affected/0/versions1:10.11.6-2.1~exp1Source reference:
/affected/0/versions1:10.11.7-1Source reference:
/affected/0/versions1:10.11.7-2Source reference:
/affected/0/versions1:10.11.7-3Source reference:
/affected/0/versions1:10.11.7-4Source reference:
/affected/0/versions1:10.11.8-1Source reference:
/affected/0/versions1:10.11.9-0+deb12u1Source reference:
/affected/0/versions - Fixed versions
- 1:10.11.18-0+deb12u1
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
mariadb
Source reference: /affected/1/package/name
- Affected versions
- 1:11.8.2-1
Source reference:
/affected/1/versions1:11.8.3-0+deb13u1Source reference:
/affected/1/versions1:11.8.3-1Source reference:
/affected/1/versions1:11.8.5-1Source reference:
/affected/1/versions1:11.8.5-2Source reference:
/affected/1/versions1:11.8.5-3Source reference:
/affected/1/versions1:11.8.5-3~exp1Source reference:
/affected/1/versions1:11.8.5-3~exp2Source reference:
/affected/1/versions1:11.8.5-3~exp3Source reference:
/affected/1/versions1:11.8.5-4Source reference:
/affected/1/versions - Fixed versions
- 1:11.8.6-0+deb13u1
Source reference:
/affected/1/ranges - Prerequisites
- Not stated in this record
mariadb
Source reference: /affected/2/package/name
- Affected versions
- 1:11.8.2-1
Source reference:
/affected/2/versions1:11.8.3-1Source reference:
/affected/2/versions1:11.8.5-1Source reference:
/affected/2/versions1:11.8.5-2Source reference:
/affected/2/versions1:11.8.5-3Source reference:
/affected/2/versions1:11.8.5-3~exp1Source reference:
/affected/2/versions1:11.8.5-3~exp2Source reference:
/affected/2/versions1:11.8.5-3~exp3Source reference:
/affected/2/versions1:11.8.5-4Source reference:
/affected/2/versions - Fixed versions
- 1:11.8.6-1
Source reference:
/affected/2/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:10.11.18-0+deb12u1"
}
]
}
],
"package": {
"name": "mariadb",
"purl": "pkg:deb/debian/mariadb?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"1:10.11.11-0+deb12u1",
"1:10.11.13-0+deb12u1",
"1:10.11.14-0+deb12u1",
"1:10.11.14-0+deb12u2",
"1:10.11.3-1",
"1:10.11.3-2~exp1",
"1:10.11.4-1",
"1:10.11.4-1~deb12u1",
"1:10.11.5-1",
"1:10.11.5-2",
"1:10.11.5-3",
"1:10.11.6-0+deb12u1",
"1:10.11.6-1",
"1:10.11.6-2",
"1:10.11.6-2.1~exp1",
"1:10.11.7-1",
"1:10.11.7-2",
"1:10.11.7-3",
"1:10.11.7-4",
"1:10.11.8-1",
"1:10.11.9-0+deb12u1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-34303.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:11.8.6-0+deb13u1"
}
]
}
],
"package": {
"name": "mariadb",
"purl": "pkg:deb/debian/mariadb?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"1:11.8.2-1",
"1:11.8.3-0+deb13u1",
"1:11.8.3-1",
"1:11.8.5-1",
"1:11.8.5-2",
"1:11.8.5-3",
"1:11.8.5-3~exp1",
"1:11.8.5-3~exp2",
"1:11.8.5-3~exp3",
"1:11.8.5-4"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-34303.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:11.8.6-1"
}
]
}
],
"package": {
"name": "mariadb",
"purl": "pkg:deb/debian/mariadb?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"1:11.8.2-1",
"1:11.8.3-1",
"1:11.8.5-1",
"1:11.8.5-2",
"1:11.8.5-3",
"1:11.8.5-3~exp1",
"1:11.8.5-3~exp2",
"1:11.8.5-3~exp3",
"1:11.8.5-4"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-34303.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #55975 · Revision 1
- Added to Heist Feed
- Publisher date