CVE-2026-85748
CRITICAL
CVSS 9.9
Published: 2026-10-16
Modified: 2026-10-16
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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.
Quick Facts
| CVE ID | CVE-2026-85748 |
| CVSS Score | 9.9 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
| Published | 2026-10-16 |
| Exploited | No |
| CISA KEV | No |
| PoC | Not public |
References
- https://github.com/MariaDB/server/commit/91156c3de5876219660…
- https://github.com/MariaDB/server/commit/9b075b2cb53338f67e7…
- https://github.com/MariaDB/server/releases/tag/mariadb-12.3.…
- https://github.com/MariaDB/server/releases/tag/mariadb-13.0.…
- https://github.com/MariaDB/server/security/advisories/GHSA-m…
- https://jira.mariadb.org/browse/MDEV-40396
- https://jira.mariadb.org/browse/MDEV-40639