CVE-2026-85748CWE-416

CVE-2026-85748

Critical · published October 16, 2026

CVSS v3.1
9.9
EPSS
1%
Percentile
45.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.9 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00547 · 45.1th percentile
Weakness
CWE-416 · Use After Free
Published
2026-10-16T21:17Z
Affected products (2)
ProductVersionsFixed in
mariadb/mariadb≥ 12.3.1, < 12.3.312.3.3
mariadb/mariadball versions—
References (7)
https://github.com/MariaDB/server/commit/91156c3de58762196605150ab3f756fe952592d1 · [email protected]https://github.com/MariaDB/server/commit/9b075b2cb53338f67e7230cc585e02d2d34514ed · [email protected]https://github.com/MariaDB/server/releases/tag/mariadb-12.3.3 · [email protected]https://github.com/MariaDB/server/releases/tag/mariadb-13.0.2 · [email protected]https://github.com/MariaDB/server/security/advisories/GHSA-mv8g-9f7q-hprm · [email protected]https://jira.mariadb.org/browse/MDEV-40396 · [email protected]https://jira.mariadb.org/browse/MDEV-40639 · [email protected]
EPSS history
Timeline
  • 18 OCT 03:32Z
    EPSS moved — → 1%
    epss
  • 16 OCT 16:28Z
    MariaDB: Use-after-free with a large number of SYS_REFCURSOR's
    cvelistv5
  • 16 OCT 16:28Z
    MariaDB: Use-after-free with a large number of SYS_REFCURSOR's
    cvelistv5