CVE-2026-85748

EUVD-2026-102941
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.9 CRITICAL
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 45.03%
Affected Products (NVD)
VendorProductVersion
mariadbmariadb
12.3.1 ≤
𝑥
< 12.3.3
mariadbmariadb
13.0.1
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
mariadb
bookworm
1:10.11.18-0+deb12u1
fixed
bookworm (security)
1:10.11.19-0+deb12u1
fixed
forky
1:11.8.9+ds-2
fixed
sid
1:11.8.9+ds-4
fixed
trixie
1:11.8.6-0+deb13u1
fixed
Common Weakness Enumeration
References
https://github.com/MariaDB/server/commit/91156c3de58762196605150ab3f756fe952592d1
https://github.com/MariaDB/server/commit/9b075b2cb53338f67e7230cc585e02d2d34514ed
https://github.com/MariaDB/server/releases/tag/mariadb-12.3.3
https://github.com/MariaDB/server/releases/tag/mariadb-13.0.2
https://github.com/MariaDB/server/security/advisories/GHSA-mv8g-9f7q-hprm
https://jira.mariadb.org/browse/MDEV-40396
https://jira.mariadb.org/browse/MDEV-40639