CVE-2026-85748

critical

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.

References

https://jira.mariadb.org/browse/MDEV-40639

https://jira.mariadb.org/browse/MDEV-40396

https://github.com/MariaDB/server/security/advisories/GHSA-mv8g-9f7q-hprm

https://github.com/MariaDB/server/releases/tag/mariadb-13.0.2

https://github.com/MariaDB/server/releases/tag/mariadb-12.3.3

https://github.com/MariaDB/server/commit/9b075b2cb53338f67e7230cc585e02d2d34514ed

https://github.com/MariaDB/server/commit/91156c3de58762196605150ab3f756fe952592d1

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-102941

Details

Source: Mitre, NVD

Published: 2026-10-16

Updated: 2026-10-20

Risk Information

CVSS v2

Base Score: 9

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 9.9

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.00547