{"id":"DEBIAN-CVE-2026-21968","details":"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).","modified":"2026-08-27T23:06:02.253323188Z","published":"2026-01-20T22:15:59.853Z","upstream":["CVE-2026-21968"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-21968"}],"affected":[{"package":{"name":"mariadb","ecosystem":"Debian:12","purl":"pkg:deb/debian/mariadb?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:10.11.18-0+deb12u1"}]}],"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"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-21968.json"}},{"package":{"name":"mariadb","ecosystem":"Debian:13","purl":"pkg:deb/debian/mariadb?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"11.8.6-0+deb13u1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-21968.json"}},{"package":{"name":"mariadb","ecosystem":"Debian:14","purl":"pkg:deb/debian/mariadb?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:11.8.5-1"}]}],"versions":["1:11.8.2-1","1:11.8.3-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-21968.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}