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DEBIAN-CVE-2026-21968

Type: advisorySource: OSV1 source record

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.0-8.0.44, 8.4.0-8.4.7 and 9.0.0-9.5.0. 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).

Announced Group revision 1
Original source ↗

DEBIAN-CVE-2026-21968

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-2026-21968

mariadb

Source reference: /affected/0/package/name

Affected versions
1:10.11.11-0+deb12u1

Source reference: /affected/0/versions

1:10.11.13-0+deb12u1

Source reference: /affected/0/versions

1:10.11.14-0+deb12u1

Source reference: /affected/0/versions

1:10.11.14-0+deb12u2

Source reference: /affected/0/versions

1:10.11.3-1

Source reference: /affected/0/versions

1:10.11.3-2~exp1

Source reference: /affected/0/versions

1:10.11.4-1

Source reference: /affected/0/versions

1:10.11.4-1~deb12u1

Source reference: /affected/0/versions

1:10.11.5-1

Source reference: /affected/0/versions

1:10.11.5-2

Source reference: /affected/0/versions

1:10.11.5-3

Source reference: /affected/0/versions

1:10.11.6-0+deb12u1

Source reference: /affected/0/versions

1:10.11.6-1

Source reference: /affected/0/versions

1:10.11.6-2

Source reference: /affected/0/versions

1:10.11.6-2.1~exp1

Source reference: /affected/0/versions

1:10.11.7-1

Source reference: /affected/0/versions

1:10.11.7-2

Source reference: /affected/0/versions

1:10.11.7-3

Source reference: /affected/0/versions

1:10.11.7-4

Source reference: /affected/0/versions

1:10.11.8-1

Source reference: /affected/0/versions

1:10.11.9-0+deb12u1

Source 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
Not stated in this record
Fixed versions
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/versions

1:11.8.3-1

Source reference: /affected/2/versions

Fixed versions
1:11.8.5-1

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-2026-21968.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "11.8.6-0+deb13u1"
          }
        ]
      }
    ],
    "package": {
      "name": "mariadb",
      "purl": "pkg:deb/debian/mariadb?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-21968.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "1:11.8.5-1"
          }
        ]
      }
    ],
    "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"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-21968.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#56618 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. DEBIAN-CVE-2026-21968 · Revision 1Source updated