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.
SeverityCritical
CVSS9.9
Exploit probability—
Product
Mariadb
PublishedOct 16, 2026
First seenOct 16, 2026
Weakness typeCWE-416Use after free
How to fix
Update
- mariadb mariadb12.3.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mariadb mariadb | 12.3.1 ≤ v < 12.3.3, 13.0.1 | 12.3.3 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.