Vulnerability in MariaDB server

[ Why it matters ]Priority signals

• Critical severity: CVSS 9.9

[ Description ]Official description

MariaDB server is a community developed fork of MySQL server. From 12.3.1 until 12.3.3 and 13.0.2, SYS_REFCURSOR handling is affected because cursor-array reallocation can leave stale references in routine contexts. A low-privileged attacker can open a large number of SYS_REFCURSORs and then fetch one to trigger a use-after-free that can enable remote code execution when combined with another vulnerability. This issue is fixed in versions 12.3.3 and 13.0.2.

[ Fixes ]Fixes and patches

• Patch on github.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD
• Patch on github.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD

[ Advisories ]Government CERT advisories

• BSI CERT-Bund18 Oct 2026WID-SEC-2026-4018

  MariaDB: Multiple vulnerabilities Translated from German

  CVE-2026-85985CVE-2026-97380CVE-2026-85745+4 more CVEs

[ References ]References

• github.com/MariaDB/server/commit/91156c3de58762196605150ab3f756fe952592d1Patch
• github.com/MariaDB/server/commit/9b075b2cb53338f67e7230cc585e02d2d34514edPatch
• github.com/MariaDB/server/releases/tag/mariadb-12.3.3Release Notes
• github.com/MariaDB/server/releases/tag/mariadb-13.0.2Release Notes
• github.com/MariaDB/server/security/advisories/GHSA-mv8g-9f7q-hprmVendor Advisory
• jira.mariadb.org/browse/MDEV-40396Issue Tracking
• jira.mariadb.org/browse/MDEV-40639Issue Tracking