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CVE-2026-21968

🗓️ 20 Jan 2026 21:56:34Reported by Debian Security Bug TrackerType 
debiancve
 debiancve
🔗 security-tracker.debian.org👁 7 Views

MySQL Server optimizer flaw lets low-privilege network attackers crash the server and cause a denial of service; affects 8.0.0–8.0.44, 8.4.0–8.4.7, 9.0.0–9.5.0.

Related
Packages
OSOS VersionArchitecturePackagePackage VersionFilename
Debian13allmariadb11.8.6-0+deb13u1mariadb_11.8.6-0+deb13u1_all.deb
Debian12allmariadb1:10.11.18-0+deb12u1mariadb_1:10.11.18-0+deb12u1_all.deb
Debian14allmariadb1:11.8.5-1mariadb_1:11.8.5-1_all.deb
Debian999allmariadb1:11.8.5-1mariadb_1:11.8.5-1_all.deb

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20 Jan 2026 21:56Current
6.3Medium risk
Vulners AI Score6.3
CVSS 3.16.5
EPSS0.00267
SSVC
7