All vulnerabilities
CVE-2026-85748GHSA-mv8g-9f7q-hprm

server: MariaDB: Use-after-free with a large number of SYS_REFCURSOR's

MariaDB serverDatabases
Open in ThreatlineRecord JSON
CVSS
9.9Critical
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.55%Chance of exploitation activity in the next 30 days, higher than 45% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Published16 Oct 2026Updated 16 Oct 2026CVE List

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

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.

Text from CVE List

Affected versions 2

  • serveraffected: >= 12.3.1, < 12.3.3CVE List
  • serveraffected: >= 13.0.1, < 13.0.2CVE List

References 7