CVE-2026-107821: MariaDB Server

High severity, CVSS 8.0. EPSS: 0.5% chance of exploitation in the next 30 days.

MariaDB server is a community developed fork of MySQL server. From 10.6.1 until 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2, MariaDB insufficiently validated counts, offsets, lengths, and field boundaries in FRM metadata while opening binary FRM files. An attacker able to place a crafted FRM file in the data directory could trigger out-of-bounds reads or writes, crash the server, or potentially execute code. This issue is fixed in versions 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2.

Affected products

• MariaDB Server: from 10.6.1, before 10.6.28 (fixed in 10.6.28); from 10.11.1, before 10.11.19 (fixed in 10.11.19); from 11.4.1, before 11.4.13 (fixed in 11.4.13); from 11.8.1, before 11.8.9 (fixed in 11.8.9); from 12.3.1, before 12.3.3 (fixed in 12.3.3); from 13.0.1, before 13.0.2 (fixed in 13.0.2)

Published 2026-10-09. Last modified 2026-10-09.