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.
Fix
Patch, vendor advisory and mitigation references on NVD 3
- https://github.com/MariaDB/server/commit/91156c3de58762196605150ab3f756fe952592d1 Patch
- https://github.com/MariaDB/server/commit/9b075b2cb53338f67e7230cc585e02d2d34514ed Patch
- https://github.com/MariaDB/server/security/advisories/GHSA-mv8g-9f7q-hprm Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 3
- Cpes+2 CPE criteria (now 2)NVD modified 2026-10-20 15:32
- StatusUndergoing Analysis → AnalyzedNVD modified 2026-10-20 15:32
- First seenCVSS 9.9NVD modified 2026-10-16 18:09
Affected (CPE criteria) 2
cpe:2.3:a:mariadb:mariadb:*:*:*:*:*:*:*:*cpe:2.3:a:mariadb:mariadb:13.0.1:*:*:*:*:*:*:*
References 7
- https://github.com/MariaDB/server/commit/91156c3de58762196605150ab3f756fe952592d1 Patch
- https://github.com/MariaDB/server/commit/9b075b2cb53338f67e7230cc585e02d2d34514ed Patch
- https://github.com/MariaDB/server/releases/tag/mariadb-12.3.3 Release Notes
- https://github.com/MariaDB/server/releases/tag/mariadb-13.0.2 Release Notes
- https://github.com/MariaDB/server/security/advisories/GHSA-mv8g-9f7q-hprm Vendor Advisory
- https://jira.mariadb.org/browse/MDEV-40396 Issue Tracking
- https://jira.mariadb.org/browse/MDEV-40639 Issue Tracking